Troubleshooting - Nyle C25W Installation, Operation, Service, Maintenance, Limited Warranty

PROBLEM
Heat pump is too noisy.
Water on floor around
the heat pump and/or
water tank.
Heat pump is not running -
electrical issues.
Heat pump is not running -
high pressure fault
Heat pump is not running -
low pressure fault
Water is never hot enough.
* Reset the heat pump by removing then restoring power to the unit at the breaker or from the manual switch. (There will be a three minute delay
before heat pump restarts.) If the heat pump cuts out again on LOW or HIGH PRESSURE, additional troubleshooting is necessary to find the cause
DO NOT CONTINUE TO RESET THE HEAT PUMP, AS CONTINUED SHORT-CYCLING MAY STRESS OR DAMAGE INTERNAL COMPONENTS.
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TROUBLESHOOTING

POSSIBLE CAUSES
1. Sheet metal fasteners are loose.
2. Operating vibration is transferring
building structure.
1. Tubing, valves, or fittings are leaking.
4. Condensation forming on
1. Circuit does not have adequate ampacity.
2. Short circuit or loose connection in field wiring.
3. Short circuit or loose connection in the cabinet
4. Thermostat failure.
5. Defective anti-short cycle timer.
6. Compressor burn-out.
1. Thermostat setting too high
2. Source Water temperature over 100° F
3. Low water flow causes
A. external pump is not operating
B. piping between the heat pump and storage tank
exceeds 50 equivalent feet
C.
heat exchanger has scale buildup
D. shut off valves are partially closed
1. Source Water temperature below 40°F
2. Loss of refrigerant
1. Thermostat setting is too low.
2. Heat pump/storage tank undersized for application.
3. Heat pump is not properly connected to storage tank.
4. Unit cooling coil is overcooling the source water.
Tighten fasteners.
to floor or
Place vibration dampeners underneath unit.
Repair leaks as necessary.
Shim unit to level. See installation section.
the bottom of unit
Cover bottom of unit with foam insulation.
Refer to nameplate for unit requirements.
Check field wiring diagram. Tighten all connections.
Check for loose wiring and tighten.
Replace thermostat
Reset phase monitor
Unknown
Replace compressor (refer to compressor change-out
page)
Thermostat setting should not exceed 150°F.
Keep
is back in operating range
Low water flow corrections
replace unit pump
reduce piping or add booster pump
clean heat exchanger with a mild acid wash
open all shut off valves
Keep heat pump off until room temperature is back in
operating range
Find source of leak, repair and recharge
Set thermostat for storage tank to a higher
Increase size of storage tank or install gas or electric heater
to make up for shortfall.
Refer to field piping diagrams for recommended piping.
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CORRECTIONS
heat pump off until room
temperature.
temperature
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