INSTRUCTION REF: IN172
ISSUE No. 1
DATE 30.10.09
Page 8 of 17
www.parry.co.uk
MAINTENANCE
Before attempting any maintenance ensure the gas supply is disconnected.
FAULT FINDING
FAULT
POSSIBLE CAUSE
REMEDY
Burner suddenly goes
out
No water in tank
Fill tank to maximum
water level mark and re
light
Incorrect flame picture,
flame lift
Incorrect burner
pressure
Check / adjust burner
pressure
Noisy burner
Blocked or partially
blocked injector
Check / clean injector
Inadequate ventilation
Check ventilation
Burner faulty / corroded
/ blocked
Check / clean burner.
Replace as necessary
Faulty flue system
Check flue system
Pilot will not light
Pilot injector blocked
Check /clean injector
Pilot supply tube
blocked / damaged
Check / clean supply
tube or replace as
necessary
Faulty spark ignition
circuit
Check Electrode and
lead
Gas supply not available Check gas supply
Pilot goes out
Poor pilot flame
Check / clean or adjust
as required
Faulty or loose
thermocouple
Check / replace as
necessary
Low gas pressure
Check gas pressure and
adjust where necessary