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Notes:
Power must be available at the water heater and to the heat pump for the LEDs to glow or flash.
When power is turned on or reconnected to the water heater, the red LED will emit a solid glow for
three (3) seconds and then extinguish. This is normal operation and does not indicate a fault. The LED
display will then return to the current operational status.
If there is power to the water heater and the green LED is off or the red LED is flashing, this indicates
there may be a fault condition with the water heater. The red LED may emit up to nine flashes in each
series of flashes. Refer to
Time controlled power supply (power must be available at the water heater)
If the water heater is connected to a time controlled power supply, then during periods of no power
supply at the water heater the LEDs will be off.
This is not a fault condition, but a result of no power being available to energise the LEDs.
The green LED will recommence glowing or flashing when power is available again at the water heater.
Heat pump operating range (power must be available to the heat pump)
The heat pump‟s operating range is between an ambient air temperature of a minimum of 3°C to 5°C
and a maximum of 45°C to 55°C. The heat pump will not operate when the ambient air temperature is
outside the heat pump‟s operating range. If heating is required, the water heater will commence heating
with the booster heating unit in booster heating mode (long green flash) instead.
At the completion of this heating cycle by the booster heating unit (long green flash), the thermostat
controlling the booster heating unit opens circuit cutting power to the heat pump causing the green LED
to go out. This is not a fault condition, but a result of the power being cut to the heat pump by the
thermostat.
The green LED will remain off for an extended period of time until the water temperature in the top of the
water heater drops to below 62°C and the thermostat closes circuit reinstating power to the heat pump,
when the red LED will emit a solid glow for three (3) seconds and then extinguish. The green LED will
then recommence to glow or flash.
The green LED will glow (standby mode – water is hot) if the water temperature in the lower part of the
water heater is 50°C or more.
The green LED will flash if the water temperature in the lower part of the water heater is less than 50°C.
If at least 45 minutes has elapsed after power is reinstated to the heat pump, i.e. 45 minutes after the
red LED emitted a solid glow for three (3) seconds and then extinguished, heating of the water by the
heat pump will recommence (3 x green flashes) if the ambient air temperature has moved back to within
the heat pump‟s operating range, or the water heater will switch to the booster heating unit (long green
flash) if the ambient air temperature is outside of the heat pump‟s operating range.
Possible fault condition
There may be a fault condition with the water heater if either:
there is power available at the water heater and the green LED is off, and
the water heater has not operated outside of the heat pump‟s operating range (refer to
operating range"
Before phoning to arrange a service inspection due to the green LED being off, refer to
Is Not Operating"
or
the red LED is flashing – the red LED may emit up to nine flashes in each series of flashes
The fault condition which led to the red LED flashing may be cleared after the backup heating cycle
by the booster heating unit has completed. When heating is next required the red LED will
recommence to flash the fault code for thirty (30) seconds and then extinguish. If the red LED then
recommences to flash or recommences to flash after the heat pump next operates, a service call
may be required.
Before phoning to arrange a service inspection due to the red LED flashing, refer to
Not Operating"
"Possible fault condition"
on page 7).
on page 15 in the "Save A Service Call" section of this Owner‟s Guide.
on page 15 in the "Save A Service Call" section of this Owner‟s Guide.
ABOUT YOUR WATER HEATER
on page 7.
7
"Heat pump
"Heat Pump
"Heat Pump Is
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