Pentair ULTRATEMP 70 Guía De Instalación Y Usuario página 34

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Problem or Symptoms
Spa will not heat to maximum
temperature of 104°F (40°C).
Thermostat is turned all the way up.
OR
Spa is heating very slowly.
Pool is heating very slowly.
Pool is not getting up to temperature.
Higher than Normal Head Pressure,
lower than normal suction pressure with
high superheat and very cold or frosty
distributor tubes, may have no Alarm.
Lower than Normal Head Pressure,
higher than normal suction pressure with
cold suction line and compressor and no
superheat, may have no Alarm.
Unusually higher than normal current.
Low current with high superheat.
Unit runs, but breaker trips continuously.
Problems and Corrective Action (3 Phase Units Only)
Problem or Symptoms
Unable to turn Heat Pump ON. Display is
Blank. Unit will NOT start.
Compressor making a loud or unusual
noise or sounds during operation. 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.
ULTRATEMP Heat Pump Installation and User' s Guide
®
Possible Cause
Low or restricted water flow through heater.
Dirty or worn filters or clogged lint traps.
Clogged filter pump impeller. Improper
plumbing valve settings. Suction leak allowing
air into the water flow. Low water flow when
switched to spa mode or the control is not in
spa mode. Unit is plumbed backwards. Heat
exchanger clogged with debris. Internal bypass
valve damaged or clogged with debris. Your
spa thermometer is not reading the correct
temperature. Air blower is running. Venturi air
inlets are open. It is very cold outside. Spa
pump is not running.
"Low or restricted water flow through heater.
Dirty or worn filters or clogged lint traps.
Clogged filter pump impeller. Improper
plumbing valve settings. Suction leak allowing
air into the water flow. It is cold outside. Pool
pump timer is not set for a long enough running
period. Pool is not covered. High wind speed
over pool. Shaded pool area."
TXV stuck closed.
TXV stuck open.
TXV stuck closed/partially closed, insufficient
water flow, system overcharged.
Unit undercharged.
Electrical issue.
Possible Cause
Incorrect Wiring.
Faulty Phase Monitor.
Loose wire on Phase Monitor, either from the
supply input power or the output side.
Compressor running Backwards. This
usually happens if the compressor wire
harness is disconnected for possible repair or
replacement.
Corrective Action
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. Shut off
air blower and or Venturi inlets that allow air turbulence
in the spa. Use a cover while heating the spa. Outside air
temperature too cold. Set spa pump timer for longer time. Call
your dealer for advice. Call the factory for advice.
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. Use a pool
cover. Place a wind break around pool. Set pool pump timer
longer. Call your dealer for advice. Call the factory for advice.
1. Disconnect TXV bulb from suction line (SL), have it in your
hand, if pressures go back to normal, then reinstall the
bulb on suction line (it may have some debris stuck in the
port). For adjustable TXVs open adjustable valve, it may
remove the debris and set it back to original position.
2. If (1) does not work, recover the charge, remove bulb from
SL, unscrew TXV head, shake it, if rattles, replace head
(PN KT-45-ZGA), if not, replace TXV and filter dryer and
charge appropriately.
1. Check to see if TXV bulb is firmly attached to suction line,
if loose, attach firmly by tightening the clamp over the bulb
and suction line.
2. If (1) above does not work, reclaim charge and replace
TXV and filter dryer with nameplate charge.
See Possible Cause column for: TXV stuck closed,
Insufficient water flow, and Unit overcharged.
Find source of refrigerant leak and fix. Pull vacuum and
charge.
Contact certified electrician.
Corrective Action
Check the Light on Phase Monitor inside the electrical box.
If red, switch two of the Input wires. Any two of the three can
be switched.
Call dealer or factory for advice before attempting to replace
parts. Replace Phase Monitor.
Check the Light on Phase Monitor inside the electrical box.
If the Light is Red, fix the supply power loose end. If the
Light is green, fix the output loose wire.
Switch any two of the three wires on the compressor side of
the contactor.