23
Fault Finding
Gas System - Fault Finding Table
Reset lit
Is there sparking on the
ignition electrodes
Yes
No
Press reset switch
Does the Blower start
Does the flame ignite with
good strong flame
∗
Air pressure switch not switching on
∗
Short circuit / arcing before electrodes
∗
Broken connection to electrodes
∗
Faulty electronic control
∗
Gas supply not on
∗
Incorrect gas pressure
∗
Incorrect injectors
∗
Faulty gas valve
Does the flame continue well
after sparking stops
∗
Broken connection from flame rod to control
∗
Bad earthing (no / poor circuit burner to control earth)
∗
Faulty electronic control
Is there sparking when the
flame stops
∗
Power spikes
∗
Air pressure switch switching off
∗
Faulty flame rod / connection
∗
Spikes on the earth
∗
Poor earth
∗
Check gas pressure
∗
Air pressure switch not switching off
∗
Faulty blower or connections
∗
Faulty electronic control
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Burner starts when set
temperature increased
Is the Power plugged in and
switch on
No
No
Yes
∗
Check / Re-calibrate Thermostat
Yes
∗
Plug in and switch on the power
Is the over-temperature
thermostat tripped
No
Yes
∗
Check the fuses (behind control panel)
∗
Check the over-temperature relay operation
∗
Faulty electronic control
∗
Replace over-temperature control
Is the oil temperature over
210ºC
No
Yes
∗
Re-calibrate thermostat (Max temp 200ºC)
