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4 205 534 / 00
Fault
Inspect / Cause
Fix
See page
Gas boiler
- Is power available
- Check fuses.
does not start
- Check the power plug
- Press On/Off button
(LED lights up)
- Is the gas valve open
- Open it
- Is the service display blinking
- Press the reset button
- Contact customer service
- Is there too little gas
- Open gas valve
(service display shows
- Contact gas provider
blinking 4 or 5)
Radiators
- Are the valves of the heater flow
- Open the flow and return valves
do not
and return open
get warm
- Is the On/Off button in the Off
- Switch unit on
9
position (LEDs are dark)
- Press On/Off button
(LED lights up)
- Is the timer clock of the TopTronic
®
T
- Check according to the
set correctly
operating manual for the heater control
- Check water level and water pressure
- Top off the heat. system and bleed off air 15
- Are the radiator valve open
- Open the valves
- The heater circ. pump is not running
- Open the latch screw
- Turn the shaft end hard with a screwdriver
until the resistance goes away
- Mixing valve does not open automatically - Open valve man.; Contact customer service
No warm
- The load pump is not running
- Unscrew the latch screw
water
- Turn the shaft end hard with a screwdriver
until the resistance goes away
- Is air in the load pipe
- Bleed air manually
- Manually activate the automatic bleeder
7. Check list in case of faults
Please note!
In case of faults in operation,
please carry out checks in accor-
dance with the above checklist.
If you are unable to correct
the fault, please call either the
installation engineer or the
Hoval Customer Services.
i
7. Check list in case of faults
