SAVE A SERVICE CALL
18
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
Normal Operation
It is normal and desirable this valve allows a small quantity of water to
escape during the heating cycle. However, if it discharges more than a
bucket full of water in 24 hours, there may be another problem.
Continuous dribble
Try gently raising the easing lever on the relief valve for a few seconds
(refer to
“Temperature Pressure Relief Valve”
on page 12). 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 until the water heater is cold - then stops until water reheats
The water heater
must
be switched off at the isolating switch or switchboard. Phone your nearest
Solahart Dealer to arrange for an inspection.
EXPANSION CONTROL VALVE RUNNING
If an expansion control valve is fitted in the cold water line to the water heater
discharge a small quantity of water instead of the temperature pressure relief valve on the water heater. The
benefit is that energy is conserved as the discharged water is cooler.
PRESSURE RELIEF VALVE DISCHARGING
A pressure relief valve is incorporated into the gas booster controls. This valve protects the gas booster, by
allowing water to escape, in the event of excessive pressure build up in the waterways.
Normal operation
A small volume of water may discharge from the bottom of the gas booster when a hot tap is suddenly
closed.
Continuous dribble
A continuous dribble may indicate the water supply pressure is above
the design pressure for the gas booster. If so, a pressure limiting valve
must be installed on the cold water supply pipe to the water heater
(refer to
on page 22).
CLOUDS OF WHITE ‘VAPOUR’ FROM THE FLUE TERMINAL
During the heating cycle, it is not unusual to see water vapour clouds
steaming from the flue terminal, particularly on cold days. This is normal
operation of the gas booster.
ERROR CODE
The water heater provides a diagnostic error code in the event of an
interruption to its operation. The error code is displayed on the front of the
water heater on the OK MONITOR as a numerical value. If an error code
appears:
Close the hot tap and switch off the electrical supply to the water
heater.
Wait 5 minutes, then switch on the electrical supply to the water heater
and open a hot tap.
If the error code persists, take note of the numerical code and turn off the
hot tap. Phone your nearest Solahart Dealer to arrange for inspection.
