User Manual HP M3 r3 DN (1) rev2019/03
Page 20
T
ROUBLESHOOTING
If there is not enough hot water we recommend that the following points are considered as
part of the service call. The most obvious reasons for a lack of hot water could be one of the
following.
Hot water use higher than anticipated
Often the hot water usage of showers, washing machines and dishwashers is underestimated
by the customer. Review these appliances to determine if the daily usage is greater than the
storage volume of the water heater. Our HP system tanks contain 250 litres of hot water
therefore if the hot water load is greater than 250 litres within a short period of time, there
may be periods where the water temperature is slightly lower than normal. It is also advisable
to inspect hot water tap washers etc. for leakage and replace if necessary.
Water discharge through the pressure valve
All Enviroheat heat pump water heaters have two pressure valves located within the system
configuration. The cold water expansion control valve (ECV), located in the cold water supply
pipe, may release a small amount of water from time to time during the heating cycle of the
system. The water discharge is water expanding due to the heating process. Normally the
discharge will be less than 10 litres per day. The pressure & temperature valve, located on the
storage tank, may also release a small expansion discharge.
It is normal for the Expansion Control Valve (ECV) to drip water when heating. If there is a
discharge of more than 10 litres per day from any of the systems valves, it indicates there may
be a problem with the valve or an increased water supply pressure. Contact your authorised
Enviroheat dealer or installation service provider as soon as possible.
If the customer is away for a long period of time
If the system is not to be used for a period of a week or more during the summer months it is
advisable to
set the appliance to ‘Holiday Mode’ as described on
page 20.
AES (Booster) system not operating
For electric systems the fuse or circuit breaker supplying the AES System should be checked. If
the time clock (where fitted) and the fuse or circuit breaker are operational and the water is
cold, you can turn the booster isolator on and off to see if the electricity meter speed changes.
If there is no change in speed, it indicates there may be a booster problem. Contact your
authorised Enviroheat dealer or installation service provider as soon as possible.
