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No or insufficient
hot water.
Check whether the
electricity
is turned on.
Check whether the
gas supply is turned
on.
Does the
ON/OFF switch light
up?
Does the
RESETswitch light
up?
Push RESET switch up
to three times
Is the
water heater in
operation?
Consult your installer.
4. FAULT FINDING
4.1 Fault finding USER
Problem
solved
no
yes
yes
yes
Is the
water heater in
operation?
no
no
Problem
solved
yes
Is the
water heater in
operation?
no
yes
no
Check if
ON/OFF switch in
position 1?
Put
ON/OFF switch in
position 1?
Reduce the water use
or increase the
control thermostat.
yes
yes