Pentair ULTRATEMP 70 Guía De Instalación Y Usuario página 33

Problem or Symptoms
LOW AMBIENT TEMP Alarm:
Refrigerant temperature sensor indicates
air temperature is too low for heat pump
operation.
FIVE ALARMS: Indicates 5 faults
have occurred in 1 hour. This fault will
automatically reset in one hour or can be
manually reset by pressing the ON/OFF
button.
Unable to turn Heat Pump ON. Display is
Blank. Unit will NOT start.
Unit power is ON, green light ON, and Set
Temperature is above Actual. Unit will NOT
start to heat or cool. No Alarms.
Unit power is ON, green light ON, and Set
Temperature is above Actual. Unit will NOT
start to heat. No Alarms.
Unit power is ON, green light ON, and Set
Temperature is above Actual. Unit cycles
on and off, i.e. Compressor cuts on briefly
and then off after Five minute delay before
set point is reached.
Unit is forming ICE or Frost on the outer
air coil, usually at the bottom.
Unit power is ON, and Set Temperature
is above Actual. Fan is NOT Turning. No
Alarms.
Fan is turning, no cool air discharge
out of top of heater. Unit ON, and Set
Temperature is above Actual, but Unit is
not heating. No Alarms.
Possible Cause
Defrost cycle did not complete within allotted
time
Bad thermistor.
5 alarms of any kind within one hour.
Control failure. No power supply to heater.
Tripped breaker or blown fuse. Faulty
Transformer. Incorrect Wiring.
Remote feature enabled, but no controlling
device hook-up. Control failure.
Heat pump not turned on.
Heat Pump pool/spa selection mode incorrect.
The thermostat is malfunctioning. Control Board
Failure.
Faulty Compressor. Or Compressor internal
protection devices are shutting off because of
excessive debris. Faulty Compressor contactor.
Incorrect wiring. Control Board Failure. Internal
bypass valve damaged or clogged with debris.
Heat exchanger clogged with debris. Suction
leak allowing air into the water flow. Unit is
plumbed backwards.
Discharge air flow is restricted. Discharge air
is accumulating and being drawn back through
the outer air coil. The fan is obstructed, low
air flow. Sprinklers spraying on the outer air
coil during cooler temperatures. Outer air coil
clogged with debris. Plants too close to heater,
blocking discharge air flow. Low refrigerant
pressure caused by a Refrigerant leak. Possible
malfunctioning of the internal low refrigerant
pressure switch. Check Alarm Status on Control
Board for LOW REFRIG Alarm.
Faulty Fan Relay. Faulty Capacitor. Faulty Fan
Motor. Control Board Failure. Incorrect wiring.
Heat Pump is in the five minute safety delay
and Compressor has not started. Faulty
Compressor. Faulty Capacitor. Compressor
contactor is stuck open. Control Board failure.
Incorrect wiring.
Corrective Action
Wait until ice melts from evaporator coil and/or air temperatures
rise.
View reported suction temperature on control board. Use 10k
ohm resistance test to verify thermistor.
Press the ON/OFF button to clear the alarm. Check Heat
Pump over the next few minutes/hours to see if alarm
appears again. This alarm most likely caused the five alarms
in one hour.
Reset breaker. Replace fuse. Call dealer or factory for advice
before attempting to replace parts. Replace Transformer.
Check wiring.
Check to see if the Remote feature on the Control Board is
enable. Disable if needed. See page 18 for more information
on disabling Remote function. Call dealer or factory for advice
before attempting to replace parts. Replace Control Board.
Check to see if heat pump is in correct active pool/spa mode
by pressing the pool/spa button. If active mode is spa, but
trying to heat/cool pool press pool/spa button again to change
the active mode to pool. If active mode is Pool, but want spa
heat change active mode to spa. Call dealer or factory for
advice before attempting to replace parts. Replace thermostat.
Replace Control Board.
Clean entire filtering system and or replace filter element.
Inspect & clean pump impeller. Adjust all plumbing valves.
Repair suction air leaks, grease pump lid O-ring. Replace filter.
Wrong filter pump pipe size. Automatic pool vacuum causing
restriction. Call your dealer or factory for advice if corrective
action does not solve the problem. Possible Compressor's
internal relief valve or overload protection device is faulty. Call
dealer or factory for advice before attempting to replace parts.
Replace Compressor.
The outside air temperature too low and Defrost feature is
NOT enable. Malfunctioning Defrost Thermistor. Make sure
heater is installed with the required placement clearances for
air flow and roof clearance. Do NOT install indoors. Make sure
that your sprinklers do NOT spray on the heater in any way
what so ever. If ice forms on the outer coil, shut the heater off
and allow ice to thaw. You may use water at low pressure to
thaw ice build up on the outer coil, shut the heater off when
doing so. Call your dealer or factory for advice corrective
action does not solve the problem.
Call dealer for advice before attempting to replace parts.
Replace Fan relay. Replace Capacitor, Replace Fan motor.
Replace Control Board.
Call dealer or factory for advice before attempting to replace
parts. Replace Capacitor. Replace Control board. Replace
Contactor. Replace Compressor.
ULTRATEMP Heat Pump Installation and User' s Guide
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