Sanden Heat Pump – Owner’s Manual
Page 10 of 20
Error Codes
When an error has occurred, a red LED on the operation panel turns on and an error code
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
Figure 3 Error Code example
Below is the list of the error codes. If the corrective action does not solve the error
problem, a malfunction of the PCB board is highly likely.
Error
code
Error contents
Error
code
Error contents
H9
HP ambient temperature thermistor
error
F5
Communication error between main
PCB to control PCB
HC
HP water outlet temperature
thermistor error
E8
High inlet current error
J3
HP discharge temperature
thermistor error
H8
Current error
J5
HP suction temperature thermistor
error
L4
High temperature of module error
J6
HP Heat exchanger temperature
thermistor error
L5
High outlet current error
J8
HP water inlet temperature
thermistor error
P4
Module temperature thermistor
error
H7
Tank temperature thermistor error
U2
High voltage error
E6
Compressor booting error
HJ
Water circuit error
H6
Compressor revolution error
EC
High water outlet error
U0
Refrigerant leakage error
E9
Water pump error
E1
Main PCB error
E7
Fan motor locked
E2
L7
Control PCB error
F3
Discharged temperature error