Malfunction And Remedies - HTW Modulante A02 series Owners And Installation Manual

9

Malfunction and remedies

Severe harm or death might be caused if the following instructions are
not followed.
In case of malfunction, please shut off the water heater immediately and contact
with technician personnel.
MUSTN'T try to repair the water heater by yourself.
MUSTN'T use the water heater if it appears malfunction.
Must use specific spare parts supplied by
accept any claims.
9.1 Malfunction Sheet
Malfunctions
Causes
Flue is blocked up.
Gas valve is not open.
Gas valve is half open.
There is air inside gas
valve.
Gas pressure is too high.
Gas pressure is too low.
Freezing
Inlet water pressure is not
enough.
Burner is blocked.
Heat exchanger is blocked.
Water controlling device
defect
Pulse ignition defect
Internal wires looses
Micro-switch defect
Batteries are put at wrong
terminals
Electromagnetic valve
defect
Feedback electrode
defect
Discharge distance or part
is abnormal.
Batteries have run down.
Inlet water valve is not
opened.
Fresh air is not enough.
, otherwise, we do not
Remedies
Check the flue and make sure it is not blocked up.
Fully open gas valve or replace gas tank.
Fully open gas valve
Repeatedly turn on and off the outlet water valve until
the water heater ignites successfully.
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Put the batteries correctly
Contact with maintenance personnel
Contact with maintenance personnel
Contact with maintenance personnel
Replace with new batteries
Fully open inlet water valve
Contact with maintenance personnel
To users
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