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Condensate Pump Troubleshooting
A condensate pump may be necessary if the drain
point is above the level of the condensate drain
on the heat pump water heater. A condensate
pump failure detect is provided with the heat pump
water heater control. Follow the instructions in the
installation and operation manual for connection
of the condensate pump failure switch to the heat
pump control.
Should the condensate pump fail to operate and
clear the condensate from the pump reservoir, the
fl oat switch provided with the pump will open. The
heat pump control will detect condensate pump
failure and shut off the heat pump in order to stop
condensate from being produced. “HEAT PUMP
FAULT” will be displayed on the user interface
and the heat pump will not operate until the fault
is cleared. By checking the MAINTENANCE
DISPLAY, the fault can be narrowed down. For
a condensate pump failure, the MAINTENANCE
DISPLAY will indicate CONDENSATE DRAIN
ALARM.
In order to determine the cause of the condensate
drain alarm, fi rst ensure that the condensate pump
has power. Check that the condensate pump is
plugged into an outlet and that the socket that the
condensate pump is plugged into is powered. If the
pump has power, check the outlet tubing for clogs
or kinks that could prevent fl ow of condensate.
Also check the pump inlet in the sump for debris
that might block fl ow. Follow the condensate pump
manufacturer’s instructions for seperating the pump
section from the tank.
If condensate pump appears to be functioning
properly but is unable to clear the condensate from
the tank, make sure the height of the discharge
point does not exceed the pump manufacturer’s
specifi cation. Consult the manufacturer’s literature
for this information.
Condensate Drain Maintenance
Condensate may be produced when the heat pump
runs, depending on the amount of humidity in the
air. If the relative humidity is high, the amount
of condensate can exceed 20 oz per hour. The
condensate is collected in a plastic pan under
the evaporator. Two drain ports are provided for
connection of primary and secondary drain lines.
1/2 inch PVC is recommended for connection to the
drain ports. The condensate pan, drain ports and
lines should be inspected and cleaned periodically.
Shut off power to the appliance before performing
any maintenance or repair. Access to the drain
pan can be gained by removing right side of louver
panel. The black plastic pan is inside located below
the evaporator and the two drain ports are located
toward the back of the unit. Wipe the inside of the
condensate pan with a clean rag to remove any
debris or algea that may be present. Use an old
toothbrush or a bottle brush to clean the inside of
the two drain ports. Flush the ports with a small
amount of clean water. Clean the condensate
pump, if one is installed, in accordance with the
manufacturer’s instructions.
Disposal of Condensate
Condensate should be disposed of in accordance
with any applicable local codes that may exist.
Guidelines for HVAC systems are applicable to the
heat pump water heater.
Inspection/Cleaning of the Condensate Drain Pan & Condensate Drain
Lines
IMPORTANT: Before attempting to clean or replace the condensate drain pan or lines press the power button to
place the water heater in Standby Mode and shut-off power to the water heater at the circuit breaker/fuse box.
1. Remove the access panel (fan side) by loosening the screws securing it to the unit.
2. Check the condensate drain pan and drain lines for any dirt or debris that might interfere with proper drainage.
Wipe out any dirt or debris with a damp cloth.
3. Once the condensate drain pan and lines have been inspected/cleaned, secure the access panel to the water
heater.
4. Restore power to the water heater and press the power button to turn the water heater on.
NOTE: The water heater will conduct an eight (8) minute system diagnostic prior to operation.