#042793 Manual

7
Version 1.1
6. When the hot water tap is turned off, the heater will shut off and remain in “stand-by mode”.
7. With the ON/OFF button of the remote control, you can switch off the water heater so the burner is
not activated via the water flow.
Troubleshooting
The IWH-1.5-13.5 is equipped with a microprocessor based self-diagnostics system. Possible errors
are displayed on the LED display of the remote control.
Failure code shown in the display
E1
Burner flame did not ignite within 10 seconds. Check LPG cylinder valve is on or refill
LPG cylinder.
E4 Flame controller delivers a signal before water tap is opened.
E5 Broken circuit of NTC (hot water sensor)
E6 Short circuit of NTC or hot water exceeds 85
℃
E7 Flameout for many times because of unstable ionization signal.
E8
When power is ON, the water flow is ＞ 1.5 l/min.
E9 Failure of pressure switch or airflow too low
EA Damaged NTC (cold water sensor)
EB Damaged CPU or circuit
ED Memory error of CPU
EE Damaged CRC
Heater does not start when the water turns on:
1. Be sure all electrical connectors are secure and the polarity is correct.
2. Be sure power is on and panel breaker is not tripped.
3. Check electrical contacts in electronics drawer. Be sure the connector with “+” and “-” power
wire is plugged into board. Using a voltmeter, check for 12 Volts on this connector.
4. Confirm the water heater is switched on via the ON/OFF button on the remote control.
5. Be sure there is a battery in the system. Never connect the heater directly to a power
converter. Some converters have circuits that are not pure DC.