AC Codes

The setting is very simple and easy.

• Step 1. Press Set button
• Step 2. Use the Temp button to adjust the code in my case York Air conditioner = 774. If the code is correct the Air Conditioner unit will respond either Turned On or Turned Off with the beep sound.
• Step 3. Press OK button – now the remote is ready for use. See images below

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Note: Sometimes the Chunghop remote may not working after using certain code provided by the manufacturers. It is because the manufacturers may have wrongly stated the code number in the package. Try different code because some airconditioner may use the same code in order for it work. When the right code is key in the airconditioner will automatically respond with a beep whether to turned on or off.

Need codes for AC remote control? Lost your AC remote? If you have an air conditioner that uses a remote control and you need the codes, here is a list of universal remote codes. This code list will help you program your old or new universal remote to operate your air conditioner. If you have lost your air conditioner remote and bought a universal AC remote, the codes we have listed will work with your brand of air conditioner.

Air Conditioner Remote Codes are compatible with:
Airwell, Arena, Arlec, Aussie Air, Aux, Blueway, Carrier, Celestial, Changhong, Chigo, Cooline, Conia, Daewoo, Daikin, DEC, Dèlonghi, Derby, Electra, Electrolux, Emailair, Fujita, Fujitsu, Goldstar, Gree, Haier, Heller, Hisense, Hitachi, Hotpoint, Hyundai, Kelon, Kelvinator, Levante, LG, McQuay, Midea, Misakae, Mistral, Mitsubishi, NEC, Omni, Omega, Panasonic / National, Polo Cool, PYE, Samsung, Sanyo, Sharp, TCL, Teco, Toshiba, Trane, Uni-Air, Whirlpool, Winia, Yconon, and York AC Brands.

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Air Conditioner Remote Control Codes

AC REMOTE CODES FOR MANY BRANDS

AC REMOTE CODES NUMBERS

AC (Air Conditioner) Brand 4 Digit Codes

Airwell Air Conditioner Codes
0529
0555
0556

Arena Air Conditioner Codes
0206
0212
0229
0718
0724
0741

Arlec Air Conditioner Codes
0202

Aussie Air Air Conditioner Codes
0809

Aux Air Conditioner Codes
0297-0300
0451
0474
0475
0810-0812
0960
0963
1987

Blueway Air Conditioner Codes
0300

Carrier Air Conditioner Codes
0203-0209
0456-0458
0482-0486
0563-0565
0721
0967
0969
1933

Celestial Air Conditioner Codes
0108
0307

Changhong Air Conditioner Codes
0301-0308
0627
0813-0815
0820
1843

Chigo Air Conditioner Codes
0379-0382
0489
0515
0890
0892
0894
1403
1916

Cooline Air Conditioner Codes
0187
0206

Conia Air Conditioner Codes
0570
0571
0806
0812
0861

Daewoo Air Conditioner Codes
0203-0209
0406
0715-0718
0818
0918
1942

Daikin Air Conditioner Codes
0171-0183
0566
0567
0577
0583
0685
0693-0696
1707

DEC Air Conditioner Codes
0504
0592

Dèlonghi Air Conditioner Codes
0232
0482

Derby Air Conditioner Codes
0311

Dynamic Air Conditioner Codes
167
0167
1670

Electra Air Conditioner Codes
0553
0557

Electrolux Air Conditioner Codes
0216-0220
0569
0728-0733
1245
1752

Emailair Air Conditioner Codes
0127
0553
0556
0557
0558
0639
0642

Fujita Air Conditioner Codes
0265
0297

Fujitsu Air Conditioner Codes
0127-0137
0464
0509
0522-0554
0640
0648
1152

Goldstar Air Conditioner Codes
0201
0466-0469
0713
0978
0979
0980
1737

Gree Air Conditioner Codes
0309-0316
0482
0512
0513
0822
0827
0830

Haier Air Conditioner Codes
0266-0272
0453-0455
0778-0781
0964

Heller Air Conditioner Codes
0107
0282
0289
0811

Hisense Air Conditioner Codes
0332-0335
0517
0847
1359
1868

Hitachi Air Conditioner Codes
0118-0126
0500
0501
0630
0631
0637
1145

Hotpoint Air Conditioner Codes
0371
0372
0521
0883
0992
1908

Hyundai Air Conditioner Codes
0202
0433
0480
0551
0609
0714
0945
1226
1505
1969

Kelon Air Conditioner Codes
0282-0287
0473
0485-0488
0794
0798
0802

Kelvinator Air Conditioner Codes
0151
0197
0203
0619
1007
1024
1133

Levante Air Conditioner Codes
0106

LG Air Conditioner Codes
0197-020
0504-0514
0567
0572
0710
1016
1026
733

McQuay Air Conditioner Codes
0234-0237
0465
0746
0747
0903
1733

Midea Air Conditioner Codes
0260-0265
0522
0523
0526
0533
0568
0582
0773
0777
0813
1289
1976

Misakae Air Conditioner Codes
0379-0382
0489
0515
1403
1916

Mistral Air Conditioner Codes
0237

Mirage Air Conditioner Codes
0556
0568
0582
0695
0989
1502
1606

Mitsubishi Air Conditioner Codes
0001-0045
0476-0479
0515
0522
0523
0556
0568
0582
0695
0989
1502
1606

NEC Air Conditioner Codes
0138-0154
0200
0483
0490-0492
0653
0658-0666

Omni Air Conditioner Codes
0146
0262

Omega Air Conditioner Codes
0040
0559

Panasonic / National Air Conditioner Codes
0138-0154
0483
0490-0492
0653
0658-0666
1507

Polo Cool Air Conditioner Codes
0040

PYE Air Conditioner Codes
0297-0300
0451
0474
0475
0810-0812
0960
0963
1987

Samsung Air Conditioner Codes
0188-0196
0503
0516
0518
0700-0707
1015
1726

Sanyo Air Conditioner Codes
0046-0095
0519
0529
0530
0558-0562
0598-0605
1011
1016
1582

Sharp Air Conditioner Codes
0096-0106
0525
0608
0609
0617
0631
0994
1007
1024
1640

TCL Air Conditioner Codes
0273-0281
0476
0493
0570
0786-0793
0861
1305

Teco Air Conditioner Codes
0045
0109
0256
0473
0474
0475
0768
0986
1007
1792

Toshiba Air Conditioner Codes
0107-0117
0479
0489
0493-0499
0561
0562
0619-0630
0815
0969
1001
1011
1643

Trane Air Conditioner Codes
0227-0232
0598
0739
0743
1768

Uni-Air Air Conditioner Codes
0222-0224
0450
0734
0735
0871
0962
1986

Whirlpool Air Conditioner Codes
0164-0170
0502
0677
0678
1760

Winia Air Conditioner Codes
0481
0550
0993

Yconon Air Conditioner Codes
0039

York Air Conditioner Codes
0107
0238
2430
0573
0750-0756
1266

AC remote control codes 4 digit

Universal AC Remote Control For Mini-split ductless air conditioners

AC Universal Remote Control For AC

Universal AC Air Conditioner Remote Control

 To program a universal air conditioner remote:
1 – Point the remote at the AC.
2 – Press “SET” and the “+ and -” buttons up or down until you have your the chosen AC code, then press “ENTER”
3 – Try the codes for your AC brand and one will work with your AC.
(The list on this page will show the remote codes for your AC brand)
4 – Test all functions of the AC to be sure it works.
5 – If all functions are not working then repeat the above process with a different code.

To program an auto finding code AC remote:
1 – Point the remote at the AC.
2 – Press the “SET” button for 5 seconds and it will begin to find the codes automatically.
3 – Your device will beep when it finds the correct AC code.
4 – Press any key on the remote to stop the search and store the AC code.
5 – Test all functions of the AC to be sure it works.
6 – If all functions are not working then repeat the above process.

NOTE: Some AC units use RF remotes and others use IR remotes.

Air conditioner remote APP for Android

More Air Conditioner Remote Codes – 4 digit

More Air Conditioner Remote Codes – 3 digit

More Air Conditioner Remote Codes – 2 digit

Air Conditioner Split System Remote Control Codes 1

Air Conditioner Split System Remote Control Codes 2

AC brand not listed? Let us know the brand of your Air Conditioner in the comments below and we will find you the codes to operate your AC. We can help whether you need 2, 3, 4, or 5 digit codes. If your brand of AC is not listed, let us know and we will add it to the list.

Friedrich PTAC Error Codes

The Friedrich Smart Center continuously monitors the PTAC unit operation and will store service codes if certain conditions are witnessed. In some cases the unit may take action and shut the unit off until conditions are corrected.

PTAC – PD Series
Packaged Terminal Air Conditioners
Packaged Terminal Heat Pumps

Error Codes	Problem
E1	High pressure protection of system
E2	Antifreezing protection
F0	In defect of refrigerant
E4	High discharge temperature protection of compressor
E5	Overcurrent protection
E6	Communication Malfunction
E8	High temperature resistant protection
EE	EEPROM malfunction
EU	Limit/decrease frequency due to high temperature of module
C5	Malfunction protection of jumper cap
Fo	Gathering refrigerant
F1	Indoor ambient temperature sensor is open/short circuite
F2	Indoor evaporator temperature sensor is open/short circuited
F3	Outdoor ambient temperature sensor is open/short circuited
F4	Outdoor condenser temperature sensor is open/short circuited
F5	Outdoor discharge temperature sensor is open/short circuited
F6	Limit/ decrease frequency due to overload
F8	Decrease frequency due to overcurrent
F9	Decrease frequency due to high air discharge
FH	Limit/ decrease frequency due to antifreezing
PH	Voltage for DC bus-bar is too high
PL	Voltage of DC bus-bar is too low
P0	Compressor Min frequence in test stat
P1	Compressor rated frequence in test state
P2	Compressor maximum frequence in test state
P3	Compressor intermediate frequence in test stat
P5	Overcurrent protection of phase current for compressor
PU	Charging malfunction of capacitor
P7	Malfunction of module temperature sensor circuit
P8	Module high temperature protection
H0	Decrease frequency due to high temperature resistant during heating operation
H1	Defrosting
H2	Static dedusting protection
H3	Overload protection for compressor
H4	System is abnormal
H5	IPM protection
H6	Internal motor (fan motor) do not operate
H7	Desynchronizing of compressor
HC	PFC protection
L3	Outdoor DC fan motor malfunction
L9	Power protection
LP	Indoor unit and outdoor unit doesn’t match
LC	Failure startup
U1	Malfunction of phase current detection circuit for compressor
U3	Malfunction of voltage dropping for DC bus-bar
U5	Malfunction of complete units current detection
U7	The four-way valve is abnormal
U9	Zerocrossing malfunction of outdoor unit

Friedrich PTAC Troubleshooting 

CAUSE	RESULT
System is not serviced or inspected regularly (semiannually or annually)	Can result in premature component failures, poor performance and increased operating costs
Air filters are not cleaned regularly and become blocked with particles	May result in poor cooling, icing and water problems as well as component failures and increased operating costs
Condenser coil not maintained properly (blocked with particles)	May result in poor cooling, component failures and increased costs
Evaporator coil not maintained properly (blocked with particles)	May result in poor cooling, icing and water problems, and increased operating costs
Components that show signs of fatigue not replaced	May result in multiple service calls, poor performance and increased operating costs
Condensate drains and drain lines not maintained	May result in water and odor problems

Friedrich Window / Room Air Conditioner Error Codes

Fault Codes	Solution
CH01	Indoor Air Sensor Error. Indoor air sensor open or short.
CH09	EEPROM CheckSum Error. EEPROM reading date error.
CH34	High Pressure Error. As high pressure,comp off over 10 times in 1 hour.

Friedrich Portable Error Codes

Error Codes	Cause
E1	Electrical short on both temperature sensor and PCB.
E2	Electrical short of temperature sensor copper tube and PCB wiring.
E4	Indicates water tank full or poor contact of signal plug. User needs to pull out the rubber stopper which is located at the bottom of the unit, to drain the water away. Check that the plug has been wired correctly.

Friedrich Portable AC Troubleshooting

Problem	Possible Cause
The airconditioner doesn’t work	There is a power failure, Wait for the power return.
	The plug is not connected. Connect the plug.
	The timer is unable to work. Provide repairment.
	The main switch has not been pressed. Press the main switch.
The airconditioner works for short period only	The set temperature is too close to the room’s temperature. Decrease the setting temperature.
	There is something blocking the suction vent on the back of condenser. Remove any obstacles.
	The fan on the condenser is blocked. Provide repairment.
The airconditioner switches are off constantly	Malfunction. Turn off the appliance remove the plug and contact the service center.
The appliance is very noisy and vibrates violently	The compressor blocking device has been loosen or the copper pipe is getting in touch with the body of the set. Provide repairment.
When LED of unit shows E1	There might be a broken or short circuit on ambient temperature sensor. Please check if it is sensor’s problem. If not, contact manufacturer for replacing the PCB.
When LED of unit shows E2	There might be a broken or short circuit on brass temperature sensor (only applicable for cooI/heat unit). Please check if it is sensor’s problem. If not, contact manufacturer for replacing the PCB.

Digital Control Diagnostics and Test Mode

Error Code: 02

Code Translation: An extreme low voltage condition exists <198V for 230V units and <239V for 265V units

Action Taken by Unit: Shut down unit. Display Error code and flash. Once voltage rises to normal level system power is restored

Possible Cause:

• Inadequate power supply
• Defective breaker
• Blown fuse

Error Code: 03

Code Translation: Return air thermistor sensor open or short circuit

Action Taken by Unit: Set return air sensor = 75°F. Alternate flash set point and error code. Leave unit running

Possible Cause: Defective sensor

Error Code: 04

Code Translation: Indoor coil thermistor sensor open Or short circuit

Action Taken by Unit: Set ID coil temp = 40°F. Alternate flash set point and error code. Leave unit running

Possible Cause: Defective sensor

Error Code: 05

Code Translation: Outdoor coil thermistor sensor open Or short circuit

Action Taken by Unit: SetOD coil temp = 20°F. Alternate flash set point and error code. Automatically change over to Electric heat Mode only. Leave unit running

Possible Cause: Defective sensor

Error Code: 06

Code Translation: If O.D. coil Temperature > 175 Deg F for 2 consecutive minutes. (Heat Pump models only)

Action Taken by Unit: Alternate flash set point and error code. Shut unit down for 5 minutes, then try again 2 times, if fails the 3rd time, then shut down unit

Possible Cause:

• Dirty coil
• Fan motor failure
• Restricted air flow
• Non-condensables in refrigeration system

Error Code: 07

Code Translation: I.D coil temperature <30 Deg F for 2 consecutive minutes

Action Taken by Unit: Alternate flash set point and error code. Continue fan operation while the compressor is locked out until the indoor coil thermistor reaches 45° F, and then energize the compressor. However, compressor must still wait a lockout time of 180 to 240 seconds

Possible Cause:

• Dirty filters
• Dirty coil
• Fan motor failure
• Restricted airflow
• Improper refrigerant charge
• Restriction in refrigerant circuit

Error Code: 08

Code Translation: If unit cycles (Heat or Cool demand)> 9 times per hour

Action Taken by Unit: Alternate flash set point and error code. Keep unit running

Possible Cause:

• Unit oversized
• Low load conditions

Error Code: 09

Code Translation: If unit cycles (Heat or Cool demand)< 3 times per hour

Action Taken by Unit: Alternate flash set point and error code. Keep unit running

Possible Cause:

• Unit undersized
• High load conditions

Error Code: 10

Code Translation: Room Freeze Protection triggered

Action Taken by Unit: Alternate flash set point and error code. Keep unit running

Possible Cause: Room temperature fell below 40°F

Friedrich Air Conditioner Heat Pump Error Codes

Error Code Mode is used to display all error codes stored since reset. It is a sub-mode of Test Mode.

Error Codes	Problem
ERROR CODES LISTING	FOR “WS” MODELS
E1	SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more frequently than it should (more than 6 times per hour).
E2	KEYBOARD STUCK ERROR: If any key button is stuck or pressed for 20 seconds or more, the unit considers it stuck. If a key is stuck it will be ignored until released. If the “Mode” key is stuck, the unit’s function will default to Cool mode.
E3	FROST PROBE OPEN: Normal operation is allowed. Replace probe.
E4	FROST PROBE SHORT: Normal operation is allowed. Replace probe.
E5	INDOOR PROBE OPEN: Control assumes indoor ambient temperature is 90 degrees F and unit will operate. Replace probe.
E6	INDOOR PROBE SHORT: Control assumes ambient temperature is 90 degrees F and unit will operate. Replace probe.
ERROR CODES LISTING	FOR “WE/WY” MODELS
E1	SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more frequently than it should (more than 6 times per hour).
E2	KEYBOARD STUCK ERROR: If any key button is stuck or pressed for 20 seconds or more, the unit considers it stuck. If a key is stuck it will be ignored until released. If the “Mode” key is stuck, the unit’s function will default to Cool mode.
E3	AMBIENT (INDOOR) AIR PROBE OPEN OR SHORT: Control will assume ambient temperature is 90 degrees F when in Cool mode and 60 degrees F when in Heat mode. Unit will operate (see note below).
E4	EVAPORATOR TEMPERATURE PROBE OPEN OR SHORT: Normal operation is allowed. Replace probe.
E5	CONDENSER TEMPERATURE PROBE OPEN OR SHORT: Normal operation is allowed. Replace probe.
E7	MOTOR OPERATION
E9	HEAT PUMP FAILURE

Unit must be in Test Mode to enter the Error Code function. Activating Error Code Mode: Press the TIMER On/Off” button (see figures 4 and 5). The LED for the TIMER On/ Off will flash 1 bps (beats per second) while Error Code Mode is active. Pressing the Temp/Hour button will display “00”. Consecutive presses will scroll through all error codes stored. Press the Temp/Hour button to see the reverse order of the error codes. When the end of the stored error codes is reached the temperature Set Point will appear. (Each error code is listed once).

Exiting Error Code Mode: press the Timer On/Off button. Clearing Error Codes: Error codes are cleared
from the memory by exiting from Error Code Mode.

Memory

The electronic control has a memory to retain all functions and settings, as set up by the user, in the event of a power failure. For example: once power is restored to the unit, there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated providing that the mode was set for cooling and the set point temperature has not been met in the room.

Automatic component protection

Your unit is equipped with Automatic Component Protection. To protect the compressor of the unit, there is a three minute delay if you turn the unit off or if power is interrupted. The fan will not be affected. Also, if you switch fromCool mode to Fan Only mode, and switch back to Cool mode, there is a three-minute delay before the compressor comes back on.

Friedrich Multi Zone Air Conditioner Error Codes

Error Codes	Meaning
Indoor Error
00	No Error
01	Indoor Room themistor error
02	Indoor in-piping sensor error
03	Remote controller error
04	Drain Pump error
05	Communcation error between in and out
06	Indoor Out-Piping sensor error
07	Differnt mode operation
09	EEPROM Check Sum Error
10	Indoor BLDC Fan Lock
Outdoor Error
21	DC Peak (IPM Fault) – Over Rated Current Off
22	CT 2(Max CT) 2times – Input Over Current Off
23	DC Link Low Volt. 2times – DC Link Volt is below 140Vdc Off
24	L_P/H_P Switch – Low/High Press Switch Open Off
25	Low Voltage/Over Voltage – Abnormal AC Volt Input Off
26	DC Compressor Position Error – Compressor Starting Fall Error Off
27	PSC/PFC Fault Error – Inverter PCB input current is over100A(peak) for 2us Off
28	DC Link High Volt – Off Off
29	COMP Over Current – Over Inverter Compressor Current Off
32	D-Pipe High (INV) – Off Off
40	CT Sensor (Open / Short) – CT Circuit Malfunction Off
41	INV. D-Pipe Th Error – Open/Short Off
44	Outdoor Air Th Error – Open/Short Off
45	Cond. Pipe Th Error – Open/Short Off
46	Suction Pipe Error – Open/Short Off
51	Capacity Over 5times – Over combination Off
52	Signal Error(DSP Board <-> Main Board) – Communication Poorly Off
53	Signal Error (Indoor <-> Outdoor) – Communication Poorly Off
60	EEPROM Check Sum Error – Check Sum Mismatching Off
61	Cond. Pipe Th High – Cond. Temp. High Off
62	Heatsink Th High -Heatsink Temp. High Off
65	Heatsink Th Error – Open/Short Off
67	Outdoor BLDC Fan Lock – Outdoor Fan is not operating Off
73	PFC Fault Error(S/W) – Over Current of Outdoor Unit PFC

Friedrich Air Conditioner Error Codes And Alarm Status

Error Codes	Problem
1	Maintenance ICON: Flash. Front Panel Button Stuck For More Than 20 Seconds Continue to monitor for “OPEN” (Unstuck) switch. Do not process switch input. ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS
2	Maintenance ICON: Flash. Input Voltage Out of Specification (103 – 127 / 187 – 253) Stop.Open all relays until voltage is back within specs. Resume operation.
3	Maintenance ICON: Flash. Indoor Temperature Sensor is Open or Shorted Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to operate.
4	Maintenance ICON: Flash. Indoor Coil Temperature Sensor is Open or Shorted Control Board sets temp to 40°F. Override sensor. Unit Continues to operate.
5	Maintenance ICON: Flash. Outdoor Coil Temperature Sensor is Open or Shorted Sets temp to 20°F. Override sensor. Continue operation. Use Elec Heat if available for HEATING. If not available use HEAT PUMP if outdoor temp allows.
6	Maintenance ICON: Flash. Outdoor Coil > (grater than) 175 F. Shut down for 5 min. Resume operation for 3 min. Continues to monitor. If test fails 3 times, the severity is increased and the unit operation is locked out.
7	Maintenance ICON: Flash. Indoor Coil < (less than) 30 F for 2 consecutive minutes Turn compressor off. Run High Fan speed. When coil temp reachs 45°F resume operation after lockout time.
8	Maintenance ICON: Log Only. Unit Cycles > (grater than) 9 Times per hour. Continue operation. Continue to monitor. Take no action. Log Only.
9	Maintenance ICON: Log Only. Unit Cycles < (less than) 3 Times per Hour. Continue operation. Continue to monitor. Take no action. Log Only.
10	Maintenance ICON: Log Only. Room Freeze Protection Only used if Electric Heat is available. Run High Speed and Electric heat until room temp reaches 46°F. Display “FRZ” during operation. Logged Only.
11	Maintenance ICON: On. WallStat Problem or Connection Issue Severity 4 error is. Unit operates based on standard input mapping. Severity 2 error opens all relays. Unit will not operate.
12	Maintenance ICON: Flash. Discharge Air > (greater than) 185 F Shutdown heat pump and electric heater. Run high fan speed until temp is 100°F. Resume operation. Third occurance in 1 hour locks unit out.
13	Maintenance ICON: Flash. Prerssure Limit Switch Open If unit is cooling or heat pump on,shut down compressor. Run high fan until switch closes. Resume operation. Third occurance in 1 hour locks unit out.
14	Maintenance ICON: Flash. Discharge Air Temperature Sensor is Open or Shorted Override Sensor. Set temp to 75°F. Continue to monitor. Set error code 14 ON.
15	Maintenance ICON: Solid On. Heat Pump Error. If indoor coil temp < (Lesser than) ambient temp for 3 minutes. Unit uses electric heat to satisfy heating demand.
16	Maintenance ICON: Flash. Temperature Beyond Operating Limits. Ambient temp < (less than) 0°F and ambient temp > (greater than) 130°F. Set error code 16 ON. When cleared return unit to normal.
17	Maintenance ICON: Flash. Equipment Doesn’t Meet Minimum Configuration. Must have compressor enabled and at least 2 fan speeds
18	Maintenance ICON: Flash. Special Test 1 Severity Level 1. Unit shuts down. Inputs via front panel or t-stat are ignored. Qualified Technical Service required URGENT.
19	Maintenance ICON: Flash. Special Test 2 Severity Level 2. Unit operates. Qualified Technical Service required.
20	Maintenance ICON: Solid On. Special Test 3 Severity Level 3 Error is Logged Only. Unit operates. Severity 3 keeps unit running. Attention is needed.
21	Maintenance ICON: OFF, Log Only. Special Test 4 Severity Level 4 Error is Logged Only. Unit operates. Severity 4 keeps unit running.
22	Maintenance ICON: OFF, Log Only. Outdoor Coil Temperature < 30 F for 2 consecutive Minutes. Unit will use electric heat to satisfy heating demands until temp > 45°F. Unit must be a Heat Pump.
23	Maintenance ICON: OFF, Log Only. Frost Protection (for Heat Pump Only Unit- YS10M10) Unit will run active defrost for a minimum of 6 minutes when Heat Pump run time is greater than 60 minutes and outdoor coil temp is 26 F or less.
24	Maintenance ICON: Flash, Outdoor Air Temperature Sensor is Open or Shorted. Continue with normal operation. Continue to monitor sensor.

Wallmaster Wiring Diagram Electronic Control Cool Only Models