Error Codes - ECO2 Systems SANCO2 GS5-45HPC 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.
2
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 is highly likely.
Error
Error
code Error contents
code
HP ambient（outdoor）
H9
E1
Main PCB error
temperature thermistor error
HP water outlet（outgoing）
E2 Control PCB error
HC
temperature thermistor error
E6 Compressor booting error
HP discharge temperature
J3
thermistor error
E7 Fan motor locked
HP suction temperature thermistor
J5
error
E8 High inlet current error HP defrost temperature thermistor
J6
error
E9 Water circulation pump error
HP water inlet（return）
J8
temperature thermistor error
EC High water outlet error
H7 Tank temperature thermistor error
F3
Discharged temperature error
E6 Compressor booting error
Communication error between main PCB
F5
to control PCB
H6 Compressor revolution error
FA High pressure side error
U0 Refrigerant leakage error
H0 High water outlet error
E1 Main PCB error
H3 Pressure switch error
E2
Control PCB error
H6 Compressor revolution error
L7
H7 Tank temperature thermistor error
H8
Current error
Error contents
Sanden Heat Pump – Owner's Manual
SANCO Heat Pump – Owner's Manual
2
Error
Error
code
code
Communication error between main
F5
PCB to control PCB
HP ambient(outdoor) temperature
H9
thermistor error
E8 High inlet current error
HP water outlet(outgoing) temperature
HC
thermistor error
H8 Current error
HJ Water circuit error
L4 High temperature of module error
HP discharge temperature thermistor
J3
L5 error High outlet current error
J5 HP suction temperature thermistor error Module temperature thermistor
P4
error
J6 HP defrost temperature thermistor error
U2 High voltage error
HP water inlet(return) temperature
J8
thermistor error
HJ Water circuit error
L4 High temperature of module error
EC High water outlet error
L5 High outlet current error
E9 Water circulation pump error
L7
Control PCB error
E7 Fan motor locked
P4 Module temperature thermistor error
F3 Discharged temperature error
U0 Refrigerant leakage error
U2 High voltage error
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Error contents
Error contents