Kaisai KHX-14PY3, Руководство пользователя

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F01
Compressor activation
failure
Restart the unit.
1. Check the changing process of EEV step, high pressure, low pressure, inlet/outlet
water temp.
2. Check the connection of U/V/W between compressor and compressor driver
board.
3. Check the compressor resistance.
4. Check compressor driver board.
F03 PFC Fault
Restart the unit.
1. Check the power supply connection and voltage supply is stable or not.
2. Replace a new compressor driver board.
F05 DC Bus Over voltage
1. Check the voltage between DCP-IN and DCN-IN, if lower than 300V, the unit will
get this protection.
2. Check the input voltage of R/S/T on compressor driver board, if lower than 210V,
the unit will get this protection.
3. If they are OK, please replace a new compressor driver board.
F06 DC Bus Under voltage
1. Check the voltage between DCP-IN and DCN-IN, if lower than 300V, it will get this
protection;
2. Check the input voltage of R/S/T on compressor driver board, if lower than 210V,
it will get this protection;
3. If they are OK, please replace a new compressor driver board
F07 AC Input Under voltage
1. Measure the input voltage of R/S/T of driver board, if lower than 300V, it will get
this protection.
2. If it’s OK, replace a new compressor driver board.
F08 AC Input Over current
Only in single phase unit. Restart the unit. Check if there is electric leakage. If not,
replace a new drive board.
F09
Input voltage sampling
fault 1. Make sure power supply not lower than 300V or higher than 500V;
2. If it’s OK, please replace a new compressor driver board.
F10
Communication Failure
between DSP and PFC
Only in single phase unit.
1. Check the inverter board connection.
2. If no problem, replace a new compressor driver board.
F11
Communication Fault
between DSP and Com-
munication board
1. Please check the inverter board connection.
2. If no problem, please replace a new compressor driver board
F12
Communication failure
between PCB and driver
board
1. Check the connection between main control board and compressor driver board.
All of 12V-12V, GND-GND, A-A, B-B should be closed.
2. If they are closed, turn on the power, then measure the voltage between 12V and
GND on compressor driver board, if higher than 15V or lower than 7V, please replace
a new one compressor driver board.
F13 IPM Overheat Stop
1. Check the fans are running or not.
2. Check the installation distance and space.
3. Leave enough distance and space to make heat pump have a good transfer
heating condition.
4. Clean the finned heat exchanger.
5. If they are OK, replace a new compressor driver board.
F15
Input voltage Lacking
Phase 1. Check the phase of power supply R/S/T to compressor driver board.
2. If it’s OK, replace a new compressor driver board.
F16
Compressor weak magne-
tic protection alarm 1. Check the refrigeration system.
2. If it’s OK, replace a new compressor driver board.
F17
Temperature fault of drive
board
1. Check the connection of heat sink temp. sensor.
2. Check the resistance of heat sink temp. sensor.
3. If they are OK, please replace a new heat sink and heat sink temp. sensor.
F18
IPM Current Sampling
Fault
1. Check ambient temp. and inlet/outlet water temp.
2. Check high/low pressure and discharge temp. and suction temp.
3. Check EEV step.
4. Check the compressor frequency and current.
5. If they are OK, replace a new compressor driver board.