Rheem 325 II Series Service Instructions Manual page 19

LED STATUS CODE TABLES
Operation
Green LED
Off
Rapid Flash
Solid
1 Flash
2 Flashes
3 Flashes
4 Flashes
Long Flash
Fault Codes
Fault Green LED
FAULT 1 Off
FAULT 3 Off
FAULT 4 Off
FAULT 5 Off
FAULT 6 Off
FAULT 7 Off
FAULT 8 Off
FAULT 9 Off
Solid
Notes
1. All faults will trigger Element Heating, except Fault 9 (9 red flashes).
2. Fault 9 will not disable all heating unless it has occurred 3 consecutive times. On the first and second consecutive occurrences of Fault 9, the heat pump will return to System Check.
3. To reset Fault 9 or cancel the start delay, press and hold the reset button until both LEDs come on.
4. The refrigerant high pressure switch is manual reset and may also need to be reset following the occurrence of Fault 9.
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
Red LED
Off No power or mechanical thermostat contacts open.
Off System Start-Up.
Off Standby Mode.
Heat Pump Mode – System Check. The system waits for the compressor sensor temperature to fall to
Off
at least 60°C and the start delay to elapse.
The start delay begins from the last compressor shut down, so may have already elapsed.
Heat Pump Mode – Heat Pump Pre-Heating. Compressor and fan on, circulator off for at least the first
Off 30 seconds. Circulator starts when the heat exchanger water outlet temperature is greater than 22°C,
and runs at variable speed.
Heat Pump Mode – Heat Pump Heating. Compressor, fan and circulator on – circulator at full speed.
Off
Off Freeze Protection. Circulator operates for 30 seconds, every 15 minutes.
Element Heating – Ambient Mode.
Off
Red LED
1 Flash Compressor Over-Temperature Fault, element heating enabled. Compressor temperature > 110°C.
3 Flashes Compressor Cooling Fault, element heating enabled. Compressor temperature > 60°C.
4 Flashes Tank Sensor Fault, element heating enabled.
5 Flashes Evaporator Sensor Fault, element heating enabled.
6 Flashes Compressor Sensor Fault, element heating enabled.
7 Flashes Heat Exchanger Water Outlet Sensor Fault, element heating enabled.
8 Flashes Water Flow Fault, element heating enabled.
9 Flashes Refrigeration System Fault, heat pump and element heating disabled.
System reset – release button.
Solid
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Condition
See the Operation section from page 13 for detailed information
Condition
See the Operation section from page 13 for detailed information
Service. All printed copies are deemed uncontrolled.
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