andrews WHC56 Owner's Manual Manual page 30

Troubleshooting-3
Please check the failure display on the remote controller or the
In the event of a failure, the cause is
notified by a blinking failure display.
Please resolve the problem in
accordance with the table below.
Failure display
11
F11
29
F29
90
F90
99
F99
[Burner on indicator is lit. (
In the event of a failure, you are notified by the burner on indicator blinking at the front of the unit.
Please resolve the problem in accordance with the table below.
Burner on indicator
Continuously blinking
Lit
Unlit
28
Burner on indicator on the main body.
Details of Failure
Fault occurs with the ignition
switch at the hot water supply
side.
Clogging of water trap
Abnormal combustion, low gas
supply pressure
Fault occurs with combustion of
the unit.
P9)]
Details of Failure
• Fault occurs with the unit.
Contact our Technical Department if:
• Any other error code appears.
• An error code is indicated again after the above actions were followed.
• There are any other questions.
Failure display blinks
(This display is an example.)
Remedy
Turn the power "Off", make sure that the gas valve is
open and that the gas meter has not shut off the gas,
and if this is the problem, please rectify it. Then, turn the
power "On", and when the hot water tap is turned on, it
is back to normal if nothing is displayed.
Please contact the installer or ANDREWS WATER
HEATERS.
Have a professional check the gas supply pressure.
Please contact ANDREWS WATER HEATERS.
Please contact ANDREWS WATER HEATERS.
Remedy
Make sure that the gas valve is open. Close
the hot water tap, then reopen it, and it is
back to normal if the burner on indicator is
no longer lit.