Technical data

Fault Finding
Gas Supply
ON
Burner
fails to
li
g
ht
Turn on Gas
Supply
Electric
Supply ON
Turn on Electric
Supply
Air in Gas
Supply
Purge Gas Line
Thermostat
calling for
hea
t
Limit thermostat
operated
No
Yes
Reset Limit
thermostat
Air pressure
switch made
Check flue fan
connections
Flue fan running
Yes
Replace flue fan
Check flue is
clear
Change air
pressure switch
d
Yes
Spark ignition
on
Check HT leads
and
connections
No flame
Faulty control
box
No
Change gas
valve
Faulty Gas
valve
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
YesYes
Yes
Check fuse Replace if
required