Troubleshooting
Problem
Possible causes
Corrective action
Display is off
No hot water
1. No power to heater
2. No power at electric socket
3. Failure in control circuit or
internal wiring
1. Switch on power to heater
2. Check power socket
3. Contact local authorized
dealer
Display is off
High water temperature
1. High temperature limit switch
tripped
2. Electrical circuit failure
1. Switch off power supply
2. Contact local authorized
dealer
Display on, no hot water
Heating element or internal circuit
failure
Contact local authorized dealer
Leaking from tank
Leaking tank or components
1. Switch off power supply
2. Contact local authorized
dealer
Dripping from pipe joints
Unsealed joints
Reconnect pipes of the water
heater and be sure to use
sealant
Display “E0”
Blue wire of two-core terminal
open circuit or short circuit
Contact local authorized dealer
Display “E1”
Red wire of two-core terminal
open circuit or short circuit
Contact local authorized dealer
Display “E2”
Black wire of two-core terminal
open circuit or short circuit
Contact local authorized dealer
Display “E3”
White wire of two-core terminal
open circuit or short circuit
Contact local authorized dealer
Display “EH”
High temperature
Contact local authorized dealer
Display “EL”
Low voltage protection
Contact local authorized dealer
Display “EA”
Relay circuit issue
1. Switch off power supply
2. Contact local authorized
dealer
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