Rheem W2W Series, Owner'S Manual And Installation Instructions

Page: 69 / 72

69
The phase detect relay will open circuit if the heat pump has been wired with
incorrect phase rotation or if a phase has failed. Both red and green LEDs on
the relay will be illuminated if phase rotation is correct.

Alarm light on heat pump controller
If the alarm light is flashing RED, check the alarm by pressing the alarm
button. Phone your nearest Rheem Service Department or Accredited
Service Agent (or Service Centre in NZ) to inform about the alarm.

Activation of Freeze Protection
Check the control panel of the heat pump. Read the error message/ warning
if it shows on the display.

Heat pump starts then turns off soon after
This could be caused by:
a. Insufficient water flow rate through heat exchanger. Check pipe sizing
per chart, check obstructions, check lines and pump are bled, check
pump is operating.
Note: Tanks and heat pumps are to be manifolded in Equa-Flow. It is
important that the branches to each storage tank ONLY contain a gate or
ball valve and union. Fitting of loose jumper valves, non-return valves or
pressure limiting valves in the branches or primary flow and return lines
between the heat pump and tanks
WILL affect performance of the heat
pump.
b. Refrigerant charge too high
c. Refrigerant charge too low?
Turn heat pump off then on again at isolating switch to reset system.

Heat pump compressor excessively noisy
Check for correct phase rotation (refer to page
68
).