Service and Parts Manual (2019, 2020, 2021, 2022)
Table Of Contents
- INTRODUCTION
- SPECIFICATIONS
- INSTALLATION
- MAINTENANCE
- R-410A SEALED SYSTEM REPAIR
- TROUBLESHOOTING
- Diagnostic Codes
- Outdoor Unit
- Outdoor Unit When The Compressor Is In Operation
- Indoor Unit
- Led Display
- Test the jumper terminals
- Protection Circuit Fault Isolation
- Compressor Fault Isolation
- Electric FIlter Board Fault Isolation
- Electrical Communication Fault ISOLATION
- Unit does not run
- Error Code 39-DC FAN
- Error Code 39-PG Fan
- Error Code 9
- Error Code 13
- Error Code 8
- Error Code 15
- Error Code 16 Cooling Mode
- Error Code 16 Heating Mode
- Error Code 21 Cooling Mode
- Error Code 11 EEPROM Fault
- Error Code 20
- Error Code 33
- Error Code 34
- Error Code 14
- Error Code 1
- Error Code 2
- Error Code 6
- COMPONENTS TESTING
- WIRING DIAGRAMS
- PARTS CATALOG
- Introduction
- 115V Indoor Unit 9-12K
- 230V Indoor Unit 9-12K
- 230V Indoor Unit High Seer 9K
- 230V Indoor Unit High Seer12K
- 230V Indoor Unit 18K
- 230V Indoor Unit 24K
- 230V Indoor Unit 36k
- 115V Outdoor Unit 9K
- 115V Outdoor Unit 12K
- 230V Outdoor Unit 9k
- 230V Outdoor Unit 12k
- 230V Outdoor Unit 18k
- 230V Outdoor Unit 18k
- 230V Outdoor Unit 24k
- Outdoor Unit 36k
- 230v Outdoor Unit 9K HIGH SEER
- 230V Outdoor Unit 12K HIGH SEER
- APPENDIX
- LIMITED WARRANTY
- CUSTOMER SATISFACTION and QUALITY ASSURANCE
- FRIEDRICH AUTHORIZED PARTS DEPOTS
46 PB
TROUBLESHOOTING
Diagnostic Codes
Outdoor Unit
Diag
Code
Outdoor Failure Description LED1 LED2 LED3 the root cause my be one of the following
Compressor drive faulted BLINKS OFF BLINKS a.the outdoor drive board failed.
b.the compressor failed.
c. the outdoor control board failed.
Outdoor fan motor locked rotor
protection
BLINKS BLINKS ON a.the connection of the outdoor fan motor is
loose.
b.there is something blocking the outdoor fan.
c.the fan motor failed.
d.the outdoor control board failed.
Outdoor coil anti-overload
protection with cooling
OFF ON OFF a.There is too much refrigerant.
b.the outdoor fan motor failed.
c.the outdoor fan is broken.
d.the condensor is dirty.
e.the air inlet and air outlet of the indoor unit
and the outdoor unit is not normal.
IPM module protection OFF BLINKS OFF a.The IPM board failed.
b.The outdoor fan is broken.
c.The outdoor fan motor failed.
d.The outdoor fan has been blocked.
e.The condenser is dirty.
f.The outdoor unit has been installed without
standard.
PFC protection BLINKS OFF OFF a.the PFC failed.
b.the outdoor drive board failed.
Compressor pre heating process BLINKS ON BLINKS it is normal mode in cold weather
Chip in outdoor board faulted ON OFF BLINKS a. Using the wrong drive board.
b. Using the wrong compressor.
AC voltage higher or lower
protection
ON ON BLINKS a.the supply voltage is higher or lower than
normal.
b.the inner supply voltage of the unit is higher
or lower than normal.
DC compressor start failure BLINKS BLINKS OFF a.the outdoor drive board failed.
b.the compressor failed.
Outdoor ambient temperature too
low protection
BLINKS OFF OFF a. Outdoor ambient temperature too low.
Mark description: the lights ash every two seconds for the following faults
Protection against overheated
outdoor radiator
BLINKS OFF OFF a. Radiator sensors failed.
b. Detection circuit of the sensor on the control
panel fails
Protection of the system against too
high pressure
BLINKS BLINKS OFF a. The pressure switch fails
b. The pressure detection switch on the control
panel failed.
c. The measured value of the system pressure
exceeds the limit.