SAVE A SERVICE CALL
19
BURNER WILL NOT LIGHT
•
Is there gas to the water heater?
Check the gas isolation valve on the gas supply line is open.
•
Is there a normal gas supply to the rest of the premises?
Try lighting another gas appliance. If there is no gas call your gas provider.
•
Is the ignition system ‘locked out’?
Try resetting the water heater. Refer to
on page 18.
BMS INTERFACE
This water heater is fitted with run / fail voltage free contacts (vfc) for connection to a Building Management
System (BMS) to remotely provide real time water heater status. The connection point is located on the left
hand side of the front cover, above the gas inlet.
A ‘fail’ signal indicates either the over-temperature cut-out on the thermostat has operated or the gas valve
has locked out after three ignition attempts. There may be a fault with the water heater.
Note: the BMS does not monitor for loss of power supply. If no hot water is available and a ‘fail’ signal is not
received, this could indicate that power is not available to the water heater.
Inspect the isolating switch adjacent to the water heater and ensure it is turned on.
If the isolating switch is turned on and the water heater fails to start, there may be a fault with the water heater.
Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
TEMPERATURE PRESSURE RELIEF VALVE OR EXPANSION CONTROL VALVE RUNNING
•
Normal Operation
It is normal and desirable the temperature pressure relief valve or
expansion control valve (if fitted) allows a quantity of water to escape
during the heating cycle. This quantity should be equal to approximately
1/50 of the hot water used, as water expands by this volume when heated.
However, if it discharges more than a bucket full of water in 24 hours, there
may be another problem.
The expansion control valve (if fitted) will discharge water instead of the
temperature pressure relief valve as it has a lower pressure rating. A
benefit is that energy is conserved as the discharged water is cooler. This
valve is installed in the cold water line to the water heater (refer to the
on page 30).
•
Continuous dribble
Try gently raising the easing lever on the relief valve for a few seconds
(refer to
on page 8). This may dislodge a small particle of
foreign matter and clear the fault. Release the lever gently.
•
Steady flows for long period (often at night)
This may indicate the mains water pressure sometimes rises above the
designed pressure of the water heater. Ask your installing plumber to fit a
pressure limiting valve.
Warning:
Never replace the relief valve with one of a higher pressure
rating.
•
Heavy flows of hot water from the temperature pressure relief valve
until water heater is cold - then stops until water reheats
The water heater
must
be switched off at the switchboard. Phone Rheem
Service or their nearest Accredited Service Agent to arrange for an
inspection.
