Categories: Air Conditioner

Friedrich air conditioner error codes

 

Extremely high or low temperatures add to the air conditioner’s workload, making the system more prone to malfunctions. Check whether you can see a fault code flashing on the display. It is very likely that it will help diagnose the problem. Using the list of Friedrich air error codes below, try to resolve the issue by yourself first. Chances are you won’t have to call for service at all.

Friedrich MC24Y3F air error codes

Error code Error contents
13 Outdoor signal abnormal
14 Excessive outdoor pressure (permanent stop)
15 Compressor temperature sensor
16 Pressure switch error
17 IPM error
18 CT error
19 Active filter module (AFM) error
1A Compressor does not operate
1b Outdoor unit fan error
1c Communication error (inverter-multicontroller)
1d 2 way valve sensor error
1E Expansion valve error
1F Connection indoor unit error
0 Communication error (indoor unit — remote controller)
1 Communication error (indoor unit — outdoor unit)
2 Room temperature sensor open
3 Room temperature sensor short-circuited
4 Indoor heat exchanger temperature sensor open
5 Indoor heat exchanger temperature sensor short- circuited
6 Outdoor heat exchanger temperature sensor
8 Power source connection error
9 Float switch operated
0A Outdoor temperature sensor
0c Discharge pipe temperature sensor
11 Model abnormal
12 Indoor fan abnormal


Friedrich VHA24K25 air error codes

Error Code Code Translation Action Taken by Unit Possible Cause
2 An extreme low voltage condition exists <198V for 230V units and <239V for 265V units. Shut down unit. Display Error code and flash. Once voltage rises to normal level system power is restored. • Inadequate power supply
• Defective breaker
• Blown fuse
3 Return air thermistor sensor open or short circuit Set return air sensor = 75°F. Alternately flash set point and error code. Leave unit running. • Defective sensor
4 Indoor coil thermistor sensor open or short circuit Set ID coil temp = 40°F. Alternately flash set point and error code. Leave unit running.
5 Outdoor coil thermistor sensor open Or short circuit Set OD coil temp = 20°F. Alternately flash set point and error code. Automatically change over to Electric heat Mode only. Leave unit running.
6 If O.D. coil Temperature > 175 Deg F for 2 consecutive minutes. (Heat Pump models only) Alternately flash set point and error code. Shut unit down for 5 minutes, then try again 2 times. If it fails the 3rd time, shut down unit to prevent high head pressure. • Dirty coil
• Fan motor failure
• Restricted air flow
• Non-condensables in refrigeration system
7 I.D coil temperature <30 Deg F for 2 consecutive minutes. Alternately flash set point and fault code. Continue fan operation while the compressor is locked out until the indoor coil thermistor reaches 45° F, then energize the compressor. However, compressor must stil wait a lockout time of 180 to 240 seconds. • Dirty filters
• Dirty coil
• Fan motor failure
• Restricted airflow
• Improper refrigerant charge
• Restriction in refrigerant circuit
8 Unit cycles (Heat or Cool demand) > 9 times per hour Store error code in memory. Keep unit running • Unit oversized
• Low load conditions
9 Unit cycles (Heat or Cool demand) < 3 times per hour Store Error Code in memory. Keep unit running • Unit undersized
• High load conditions
10 Room Freeze Protection triggered Alternately flash set point and error code. Keep unit running. • Room temperature fell below 40° F
11 No Signal to “GL” or “GH” terminal (Remote Thermostat mode only) Shut down unit. Display error code and flash. • Defective remote thermostat
• Defective thermostat wiring
13 If Pressure limit switch opens Turn OFF compressor. Alternate flash set point and error code


Friedrich MW13C3E air error codes

LEO Error contents
1 flash Communication error (Indoor unit – Outdoor unit)
2 flash Discharg pipe temperature sensor
3 flash Outdoor heat exchanger temperature sensor
4 flash Outdoor temperature sensor
5 flash 2 way valve sensor
6 flash 3 way valve sensor
7 flash Compressor temperature sensor
8 flash Heat sink temperature sensor
9 flash Pressure switch A abnormal
10 flash Pressure switch B abnormal
11 flash Connection indoor unit error
12 flash IPM orror
13 flash Compressor rotor position cannot detect
14 flash Compressor cannot operate
15 flash Outdoor fan abnormal
17 flash Communication error (inverter – mufti controller)
lighting No error