23
221790B
9 Fault Finding
ELECTRICAL FAULT FINDING
Diagram 9.3
9007
Isolate the supply. Gain access to the control
box, check all connections etc.
Restore supply. Using multimeter set at 230V. AC.
Check supply fuses. Renew if
necessary. If ok then fault lies withtin
remote controls. Inform customer.
With remote controls (if fitted) calling for heat
is there 230V between L &
N
Does main burner light.
Replace multi-functional control harness
YES
NO
YES
NO
Ensure that all services are available at the
appliance. ie. Gas, Electricity, Water.
Also turn control thermostat fully on and
check to see if pilot is lit.
Restore supply. Is there 230V between
"L" & "N" on multi-functional control?
Faulty multi-functional control. Renew.
Does pump run ?
CONTROLS IN ORDER
MAIN TERMINALS STRIP
Isolate supply. Remove gas valve
cover. Check continuity of multi-
functional control wire harness.
Continuity ok ?
Faulty control thermostat. Renew
Faulty pump, inform customer.
YES
YES
YES
YES
NO
NO
NO
