Troubleshooting
Appliance fails to ignite
No gas or supply pressure insufficient
Ensure gas supply connected, purged,
and pressure appropriate
Unit will not operate on
Low.
Incorrect gas valve adjustment.
Adjust valve.
Incorrect or loose wiring.
Check wiring
No electrical supply.
Ensure unit plugged in and switch is
on, check supply fuse.
Incorrectly wired power point.
Check supply. Active, neutral, & earth
must be correctly orientated and
connected.
Insufficient time allowed between
attempts.
Wait at least 30 seconds for unit to
purge combustion chamber after
switching on.
Internal wiring disconnected.
Blockage in flue.
Faulty air pressure switch.
Check all plugs inside appliance are
connected properly and correctly
located, Ensure operation of
combustion fan & air pressure switch.
Check flue tube & clear blockage.
Replace air pressure switch.
Room fan not operating.
Insufficient time allowed.
Fan has a delayed start and will not
start until unit warms-up.
Loose wiring.
Check wiring.
Fan not located correctly.
Install fan in correct location.
Fan blocked.
Remove and clean fan
Unit cuts out after a period
of time then cycles on and
off.
See “Room fan not operating”
See “Room fan not operating”
Excessive carbon (soot)
deposits on inside of
firebox, logs, and/or glass.
Heat exchanger blockage.
Clean heat exchanger.
Excessive pressure or incorrect gas
type.
Ensure correct gas type, injector size,
and pressure setting.
Incorrect gas type or pressure setting.
Ensure correct gas type, injector size,
and pressure setting
Primary air shutter incorrectly adjusted
for gas type
Adjust primary air shutter.
Derwent High Efficiency Gas Log Fire
29
