12
Troubleshooting
Fault phenomenon
Possible reasons
Solution
No display
No hot water
Water heater power off
No power available in electric socket
Failure in control circuit or internal wiring
Power on water heater
Check electric socket
Contact local authorized dealer.
No display
Too high water
temperature
ECO error
Power board error
Contact local authorized dealer
Display
No hot water
Heating element or internal wiring failure
Contact local authorized dealer
Water leakage
Pipe connection lose
Tank leakage
Contact local authorized dealer
Display “E1”
White wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “E2”
Blue wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “E4”
Black wiring with eight-core terminal Short
circuit or open circuit
Contact local authorized dealer
Display “E6”
Red wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “E8”
Abnormal anode bar wiring
Contact local authorized dealer
Display “H6”
Green wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “H7”
Blue wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “H8”
Yellow wiring with eight-core terminal short
circuit or open circuit
Contact local authorized dealer
Display “H9”
Black wiring with eight-core terminal Short
circuit or open circuit
Contact local authorized dealer
Display “H0”
The circulation pump temperature probe is
shorted or opened when the circulation pump
is started.
Contact local authorized dealer
Abnormal noise
The inner components,
brackets or pipe
deformation.
Screw is loosing
Contact local authorized dealer
Abnormal noise during
operation
The normal noise during operation including:
Fan operation
Compressor operation
Refrigerant flowing
Action of relay.
Contact local authorized dealer
