Friedrich Floating Air Pro Multi-Zone FPHFC09A3B WI-FI, Service & Parts Manual

Page: 110 / 196

110 PB
TROUBLESHOOTING
Drive fault code (3.0/3.5HP)
code
Fault escription Possible reasons for bnormality How to eal ith
1 Inverter DC voltage overload fault
1. Power supply input is too high
or too low;
2. Driver board fault.
2
1. Check power supply
；
2. Cha nge driver board.
Inverter DC low voltage fault
3 Inverter AC current overload fault
4 Out-of-step detection
Loss phase detection fault (speed
1. Compress or phas e lost
2. Bad driver board components
3. The compress or insulation fault.
5
1. Check compre ssor wire
connect ion;
2. Cha nge the driver board ;
3. Cha nge compressor.
pulsation)
6
7
Loss phase detection fault (current
imbalance)
Inverter IPM fault (edge)
overload;
2.
1. System overload or current
3.
4. The compress or insulation fault.
Driver board fault.
Compress or oil shortage,
serious wear of cranks haft ;
8 Inverter IPM fault (level)
1. Check the system.
2. Cha nge the driver board;
3. Cha nge the compressor;
4. Cha nge the compressor.
9
10
11 PFC power detection of failure
1. The power supply is not stable;
2. Instantaneous power off;
3. Driver board failure.
12
1. Chec k the power supply.
2. No need to deal with .
3. Cha nge the driver board.
PFC overload current detection of
failure.
1. System overload, current is
too high;
2. Driver board fails;
3. PFC fails.
13
1.Check the system;
2.Change the driver board;
3.Change the PFC.
DC voltage detected abnormal .
1. Input voltage is too high or too
low;
2. Driver board fails.
14
1. Chec k the power supply;
2. Cha nge the driver board.
15
PFC LOW voltage detected
failure.
AD offset abnormal detected
failure.
Driver board fails. Change the driver board.
16 Inverter PWM logic set fault.
17
18 Inverter PWM initialization failure
19
20
Temperature abnormal.
21
22
Shunt resistance unbalance
adjustment fault
Communicati on failure.
1. Communicati on wire connect ion
is not proper;
2. Driver board fails;
3. Contro l board fails.
23
1. Chec k the wiring;
2. Change the driver board ;
3. Change the control board.
Motor parameters setting of failure Initialization is abnormal.
25
Reset the power supply.
EE data abnormal Driver board EEPROM is abnormal 1. Change EEPROM
2. Change the driver board.
26 DC voltage mutation error
1. Power input chang es suddenly
2. Driver board fails.
27
1.Chec k power supply, to provide
stable power supply;
2.Change driver board.
D axis current control error
1. System overload , phas e current
is too high;
2. Driver board fails.
28 Q axis current control error
1. Chec k system to see if it works
normally.
2. Chec k stop valve to see if it is
open;
3. Change the driver board.
29
1. System overload s, phas e
current is too high
2. Driver board fails.
1.
2.
Saturation error of d axis current
control integral
System overload suddenly;
Compress or parameter is
not suitable;
3. Driver board fails.
30 Saturation error of q axis current
control integral
1. System overload suddenly;
2. Compress or parameter is
not suitable;
3. Driver board fails.
1. Chec k system to see if it works
normally.
2. Chec k stop valve to see if it is
open;
3. Change the driver board.
1. Chec k system to see if it works
normally.
2. Chec k stop valve to see if it is
open;
3. Change the driver board.
1. Chec k system to see if it works
normally.
2. Chec k stop valve to see if it is
open;
3. Change the driver board.