Specifications

Stellar Service Instructions REV: D
Date of Issue: 14/09/2007
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24
FAULT FINDING – CHART 7
Intermittent Operation
7
Is the
water heater
installed against
an external
wall?
The balanced flue terminal will not
operated correctly unless the water
heater is installed against an external
wall. Refer to page 5
NO
Reposition the water
heater against an
external wall or install a
blade behind the water
heater extending 500mm
either side and to the
height of the water
heater.
Has
the water heater
been delivering
excessively hot
water?
YES
The water heater may be stacking
causing the ECO to operate and shut
off the gas supply to the pilot
YES
5.1 / 5.2
Is the
flue liner seal
correctly positioned and
sealing to the
cylinder?
Remove the gas control and
burner assembly and check
the flue liner seal is correctly
positioned
NO
Flue gases are being recirculated into
the combustion chamber causing the
pilot to starve for oxygen
NO
Replace the flue liner
seal
Are the
drain holes in
the burner condensate
cup blocked with
scale?
YES
The build up of condensate in the
burner can cause the main burner
flame and pilot to extinguish
YES
Clean the burner drain
holes and condensate
cup parrot beaks
1
Most intermittent faults relate to pilot
outage. Follow flow chart 1 and
conduct the tests outlined in the pilot
fault finding section
NO