Rheem 310 - Page 24

COMMISSIONING
24
The modes are:
Green LED
Red LED
Operational Modes
solid green
(remains on)
off
Standby mode – water is hot
1 x green
off
Call for heating received – system checks performed
Note: if call for heating received, unit may wait and
continue flashing until five minutes has elapsed after its
last operation and until the compressor has cooled
2 x green
off
Circulator commences circulation
4 x green
off
Heat pump operation – compressor and fan running
no green
(remains off)
off
No power at the water heater or to the heat pump or a
possible fault condition
Refer to notes overleaf before calling for service
Green LED
Red LED
Indicator or Fault Modes
off
Solid red
(remains on)
Ambient temperature < 0°C Heating unit on
off
1 x red
Storage tank thermistor fault condition Heating unit on
off
2 x red
Heat exchanger (heat pump) water outlet > 80°C
Heating unit on
off
3 x red
Evaporator < -3°C Heating unit on
off
4 x red
Refrigeration system fault 1 Heating unit on
off
5 x red
Refrigeration system fault 2 Heating unit on
off
6 x red
Water flow fault Heating unit on
off
7 x red
Compressor over temperature condition (> 110°C)
Heating unit on
solid green
(remains on)
1 x red
Heating stopped due to insufficient flow rate
Heating unit off
1 x green
1 x red
Heat exchanger (heat pump) water outlet thermistor
fault condition Heating unit on
2 x green
2 x red
Heat exchanger (heat pump) water inlet thermistor fault
condition Heating unit on
3 x green
3 x red
Evaporator thermistor fault condition Heating unit on
4 x green
4 x red
Compressor thermistor fault condition Heating unit on
5 x green
5 x red
Ambient temperature thermistor fault condition
Heating unit on