Problem
P
ossible causes
Corrective action
• No display
No power to heater
Switch on power to heater
•
No hot water
No power in electric socket
Check power socket
Failure in control circuit
Call
local authorized dealer
or internal wiring
•
No display
High temperature limit
Switch off power supply
•
High water
switch open
Call
local authorized dealer
temperature
Electrical circuit failure
•
Display, no
Heating elements or
Call
local authorized dealer
hot water
internal circuit failure
•
Drip from
Unsealed joints
Reconnect pipes of water
pipe joints
heater and be sure to use
seal tape
•
Drip from
Tank or accessories leakage
Disconnect power to
enclosure
Drain blocked
heater immediately
Condensate pipe distorted
Check & make condensate
or not downward facing
pipe downwards
Call
local authorized dealer
•
Display ”E2”
Black wire of two-core terminal
Call
local authorized dealer
open circuit or short circuit
•
Display ”E3”
White wire of two-core terminal
Call
local authorized dealer
open circuit or short circuit
•
Display ”E1”
Red wire of two-core terminal
Call
local authorized dealer
open circuit or short circuit
•
Display ”E0”
Blue wire of two-core terminal
Call
local authorized dealer
open circuit or short circuit
•
Display ”EH”
Ultra High temperature
Call
local authorized dealer
•
Display ”EL”
Low voltage protection
Call
local authorized dealer
•
Display “EA”
The relay breakdown
1) Switch off power supply
2) Call
local authorized dealer
Troubleshooting
Problem
Ossible causes
Corrective action
13