Troubleshooting - A.O. Smith HPI-40C1.0AT User Manual

Fault phenomenon
No display
No hot water
No display
Too high water
temperature
Display
No hot water
Water leakage
Display "E1"
Display "E2"
Display "E4"
Display "E6"
Display "E8"
Display "H6"
Display "H7"
Display "H8"
Display "H9"
Display "H0"
Abnormal noise
Abnormal noise during
operation

Troubleshooting

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