Watter Saver HPWH500AAOC Installation, Operation And Maintanance Manual - page 13
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ECR International
13
EVAPORATOR FROSTING OR ICING (continued)
Loss Of Refrigerant Charge/Leak In Heat Pump Sys-
tem. Repair leak and reprocess heat pump system with 16
oz. (.47 liters) of R134A. (See warranty.)
Defective Thermoexpansion Valve (TXV). Replace TXV.
(See Warranty.)
Poor Air Flow. Ensure operation of both fans, verify evapo-
rator coil and air filter are not dirty, and make sure airflow
to inlet or outlet is not blocked.
Important: Fan cycling may occur in ambient condi-
tions greater than 90° F (32.2° C).
T&P VALVE DRIPPING
System Pressure Too High. Decrease system pressure.
Improperly Seated T & P Valve Seal. Refer to “T & P
valve” on page 5 of this IOM.
Defective T & P Valve. Replace T & P valve.
NO HOT WATER
Insufficient Power To Unit. Verify power supply.
Defective Upper Electrical Element. Replace upper
electrical element.
Defective Thermostat. Replace thermostat.
Defective Control Board. Replace control board.
Defective Upper Temperature Sensor. Replace upper
temperature sensor.
High Temperature Cutout Switch Is Open. Reset high
temperature cutout switch by removing top element cover
and pushing the red “reset” button until it clicks.
INSUFFICIENT HOT WATER
Defective Temperature Sensors. Replace temperature
sensors.
Thermostat Too Low. Increase thermostat setting.
Unit Undersized For Application. Install adequately
sized water heater.
Defective Upper Element. Replace upper element.
Piping Is Incorrect. Refer to “Piping Installation” on page
6 of this manual.
INSUFFICIENT HOT WATER (continued)
Long Runs Of Exposed Piping Or Hot Water Piping In
Exposed Wall. Insulate piping.
Sediment Or Lime In Tank. Flush tank as described on
page 11 of this manual.
Leaking Faucets. Repair faucets.
Loss Of Charge. See warranty.
SLOW HOT WATER RECOVERY
Defective Upper Electrical Element. Replace upper elec-
trical element.
Defective Control Board. Replace control board.
Defective Upper Or Lower Temperature Sensors. Re-
place temperature sensor(s).
Loss Of Charge. See warranty.
WATER ODOR
Sulfides In Water. See “Water Odor” on page 10.
RED LED GLOWING
Manual Bypass Switch On Control Board Is In The
“Elec” Position. Switch manual bypass switch to the “HP”
position.
Ambient Conditions Outside Of Operating Range.
Move water heater to more suitable location.
Lower Tank Heat Is Called For Within Six Minutes Of A
Previous Compressor Shutdown. Allow a minimum of
six minutes between restarts.
Heat Pump System Failure. Consult factory.
HIGH OPERATING COSTS
Manual Bypass Switch On Control Board Is In The
“Elec” Position. Switch manual bypass switch to the “HP”
position.
Thermostat Too High. Lower thermostat into the “most
efficient” range of the temperature indicator label.
Unit Undersized For Application. Install adequately
sized water heater.
Loss Of Charge. See warranty.