FAULT FINDING
SECTION 7
22
NO IGNITION
AT PILOT
FLUE FAN RUNS
NO IGNITION
SPARK
FLUE FAN DOES
NOT RUN
CONTINUOUS
IGNITION NO
PILOT FLAME
HEATER WILL
NOT LIGHT
LOCKOUT
ALARM
ILLUMINATED
MAIN BURNER
OUTAGE AT
PERIODIC
INTERVALS
(a) Power to unit interrupted
(b) Thermostat faulty
(c) Spark ignition control module faulty
(a) Faulty air pressure switch
(b) Faulty spark ignition lead
(a) Power to unit interrupted
(b) Faulty fan motor
(c) Flue fan ECO actuated
(a) Check gas service cock is open
(a) Check gas service cock is open Press reset button
Check action of flue fan ECO. If this switch is
Actuating check:
(a) Sufficient ventilation is provided
(b) The resistance of the flue system is to high
(c) The burner pressure is to high
(d) The flue fan ECO is faulty
FAULT
ACTION
