Glow-worm economy plus c 30 Instructions For Use, Installation & Servicing page 21

ELECTRICAL FAULT FINDING
Ensure that all services are available at the appliance, that is Gas, Electricity, Water.
With Pilot Lit. Reset Flue Blockage Safety Device.
START
Isolate the supply. Gain access to the control
box, check all connections etc. Restore supply.
Using multimeter set at 240V.
YES
Is there 240 V between L and N ?
YES
Is there 240 V between 9 and N ?
YES
With Red Link removed between 9 and SL
and Remote Controls Calling for Duty.
Is there 240V between SL and N ?
YES
Is there 240 V between 9 and N ?
YES
Is there 240 V between 8 and N ?
YES
Is there 240 V between 3 and N ?
YES
Turn ON thermostat. With appliance cold.
Is there 240V between 6 and N ?
YES
Turn OFF thermostat.
Is there 240V between 6 and N ?
NO
Turn ON thermostat. Does main burner light ?
Turn ON thermostat. With appliance cold.
Is there 240V between 7 and N ?
YES
Turn ON thermostat.
Is there 240V between 7
NO
Continued
8 Fault Finding
NO
YES
YES
NO
and N ?
YES
Continued
NO
Check incoming supply and fuses.
Repair where required.
NO
Faulty Brown bridge wire between L and 9
Repair where required.
NO
Faulty Remote Controls, inform customer.
NO
Faulty cable (BROWN), from terminal block to
thermostat, repair or renew.
NO
Faulty cable (RED), from terminal block to
thermostat, repair or renew.
Faulty cable (RED), from terminal block to
thermostat, repair or renew.
NO
Faulty thermostat, renew.
Isolate the supply. Remove gas valve cover.
Restore supply. Is there 240V between 'L'
and 'N' on gas valve ?
NO
NO
Faulty gas valve, renew.
Isolate supply check continuity of white cable
and Flue Blockage Safety Device,
if faulty repair or renew.
MAIN TERMINAL STRIP
YES
THERMOSTAT TERMINALS
21
YES
Continued
Diagram 8.3
221460C