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
49 PB
TROUBLESHOOTING
Diagnostic Codes
Indoor Unit
Error
Code
Power Timer Running Sleep
1 2 3 4 Content The root cause is may be one of the following
9 OFF OFF BLINK OFF Maximum current
protection
a.the outdoor control board is short circuited.
b.the drive board is short circuited.
c. other components are short circuited.
10 OFF OFF BLINK ON Communication trouble
between outdoor unit and
driver
a. the connection wires loose.
b.the outdoor board or drive board failed.
11 OFF ON BLINK OFF Outdoor EEPROM in trouble a.the EEPROM chip is loose.
b.the EEPROM chip inserted incorrectly.
c.the EEPROM chip failed.
12 OFF ON BLINK ON Outdoor ambient
temperature too low
protection
Outdoor ambient temperature too low.
13 ON OFF BLINK OFF Compressor exhaust
temperature too high
protection
a.the compressor exhaust temperature sensor
failed.
b.the unit refrigerant charge is low
14 ON OFF BLINK ON Outdoor ambient
temperature sensor failure.
a.the outdoor ambient temperature sensor
connector loose
b.the outdoor ambient temperature sensor
failed.;
c.the outdoor control board failed.
15 ON ON BLINK OFF Compressor shell
temperature too high
protection
a.the compressor exhaust temperature sensor
connector loose.
b.the unit refrigerant charge is low.
16 Anti-freeze protection
with cooling or overload
protection with heating in
a.the indoor coil temperature sensor
connector loose;
b.the indoor coil temperature sensor failed..
c.the indoor control board failed..
d. the refrigerant system is abnormal
17 PFC protection a.the PFC failed.;
b.the outdoor drive board failed.
18 DC compressor start
failure
a.the outdoor drive board failed.;
b.the compressor failed.
19 OFF OFF OFF BLINK Compressor drive failure. a.the outd oor drive board failed.;
b.the compressor failed.
c. the outdoor control board failed.
20 ON OFF OFF BLINK Outdoor fan motor locked
rotor protection.
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.
21 Outdoor coil anti-overload
protection with cooling.
a.the unit refrigerant charge is exccessive.
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.
22 Compressor pre heating
process
it is normal mode in cold weather.