Error Codes - Sanden EcoPlus GAUS-300FQS Owner's Manual

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
HP ambient temperature thermistor
H9
error
HP water outlet temperature
HC
thermistor error
HP discharge temperature
J3
thermistor error
HP suction temperature thermistor
J5
error
HP Heat exchanger temperature
J6
thermistor error
HP water inlet temperature
J8
thermistor error
H7 Tank temperature thermistor error
E6 Compressor booting error
H6 Compressor revolution error
Refrigerant leakage error
U0
E1 Main PCB error
E2
Control PCB error
L7
Error contents
Sanden Heat Pump – Owner's Manual
Error
code
Communication error between main
F5
PCB to control PCB
E8 High inlet current error
H8 Current error
L4 High temperature of module error
L5 High outlet current error
Module temperature thermistor
P4
error
U2 High voltage error
HJ Water circuit error
EC High water outlet error
E9 Water pump error
E7 Fan motor locked
F3 Discharged temperature error
Page 10 of 20
Error contents