Rheem MPi Series User Manual

COMMISSIONING
34
The modes are:
Flashes
Operational Modes
solid green
(remains on)
Standby mode – water is hot
1 x green
Call for heating received – system checks performed
Note: unit may wait and continue flashing until compressor has
cooled from its last operation
2 x green
Heat pump preheating
3 x green
Heat pump operation – compressor and fan running
4 x green
Freeze protection operation – circulator on
long green
Heating unit on – ambient air temperature
below 3°C to 5°C or above 45°C to 55°C
rapid green
System start up – heating unit on
no green
(remains 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
Flashes
Indicator or Fault Modes
1 x red
Heating unit on compressor over temperature
(possible circulator fault)
3 x red
Heating unit on compressor cooling fault condition
4 x red
Heating unit on tank thermistor fault condition
5 x red
Heating unit on evaporator thermistor fault condition
6 x red
Heating unit on compressor thermistor fault condition
7 x red
Heating unit on heat exchanger water outlet sensor fault
8 x red
Heating unit on water flow fault condition
9 x red
Heating unit off refrigeration system (compressor)
fault condition
Call for service
solid red
(remains on) +
solid green
(remains on)
Heating unit off system reset – release button

Rheem MPi Series Specifications

General

Brand	Rheem
Model	MPi Series
Category	Heat Pump
Language	English