26
13.2.
FAILURE CODE CHECKING
When a failure occurs, it will show failure symbol on the screen.
Failure code display area,“ E-“ means no failure. If another faiure code, please refer to the bottom
of this page in [Common failures and maintenance], the corresponding failure to understand the
cause and solutions.
Common failures code
13.3
PARAMETER CHECKING AND SETTING
The system parameters can be checked and adjusted via the controller. But they should not be changed
casually, especially by house owners.
Warning
This operation is reserved to facilitate future service and maintenance.
All parameters should not be changed casually, especially by house owners!
Code
Description
Er 01
Phase fault
Er 02
Phase missing
Er 03
Water flow failure (DHW)
Er 04
Water flow failure (Heating/Cooling)
Er 05
1# High pressure protection
Er 06
1# Low pressure protection
Er 07
2# High pressure protection
Er 08
2# Low pressure protection
Er 09
Communication failure
Er 10
DHW temperature sensor failure
Er 11
Countdown lock
Er 12
1# High compressor discharge temperature protection
Er 13
2# High compressor discharge temperature protection
Er 16
1# Coil temperature sensor failure
Er 17
2# Coil temperature sensor failure
Er 18
1# Compressor discharge temperature sensor failure
Er 19
2# Compressor discharge temperature sensor failure
Er 20
Ambient temperature sensor failure
Er 21
Heating/Cooling inlet water temperature sensor failure
Er 22
DHW outlet temperature sensor failure
Er 23
1# Compressor suction temperature sensor failure
Er 24
1# Compressor discharge temperature sensor failure
Er 29
1# Compressor Over-current protection
Er 30
2# Compressor Over-current protection
Er 32
Low ambient temperature protection
Er 33
Heating/Cooling outlet water temperature sensor failure
Er 34
Low outlet water temperature protection in Cooling mode
Er 37
Too big water temperature difference between inlet and outlet during
Heating /Cooling
Er 99
Communication failure
