Use and Care Guide

Maintenance Code Description
1
Protection due to temp.
sensor at water inlet
Open or short circuit of temp sensor at
water
inlet
10
There is flame signal feedback during
pre-check before applance starts up.
11
Fail to ignite
12
The continous combustion goes off
accidentally.
Thermostat is not connected when
appliance starts up.
Thermostat becomes disconnected
during normal combustion.
30
There is air pressure signal feedback dur-
ing pre-check before applance starts up.
31
Flue blockage protection is already
activated before appliance starts up.
32
Flue blockage protection becomes
activated during normal combustion.
40
Protection due to fan
Fan is not working; or there is no fan
rotating signal.
Revolving speed of the fan ≥600r/min
after power and water supply is on
Turn off the appliance for 45s after
operation and restart water supply;
revolving speed ofthe fan ≥600r/min
50
Outlet water temp. >80℃ （equal to 176℉）
51
Inlet water temp. >75℃ （equal to 167℉）
60
Protection due to temp.
sensor at water outlet
Open or short circuit of temp sensor at
water
outlet
42
Protection due to fan
revolving speed
Possible Cause
The possible
cause
information is
just for
reference only.
Please contact
our after-sale
service
immediately in
case of any
malfunction.
Protection due to flame
feedback signal
13
Protection due to
thermostat
Protection due to air
pressure
Protection due to high
temp.