Pentair ULTRATEMP ETi 220 Installation And User Manual page 45

Problem or Symptoms
Unable to turn Heater 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. No Alarms.
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.
Spa will not heat to maximum
temperature of 104°F (40 .
°C)
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 distribu-
tor tubes, may have no Alarm
Possible Cause
GENERAL ISSUES
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.
Heater pool/spa selection mode incorrect. The
thermostat is malfunctioning. Control Board
Failure.
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.
Heater 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.
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. Unit
is plumbed backwards. Heat exchanger clogged
with debris. Internal bypass valve damaged or
clogged with debris. 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.
Corrective Action
Reset breaker. Replace fuse. Call professional serviceman to
inspect transformer. Check wiring.
Check to see if the Remote feature on the Control Board is enabled.
Disable if needed. See Remote Mode, on pages 26-27, for more
information on disabling Remote function. Call professional service
person to check Control Board.
Check to see if heater is in correct active pool/spa mode.
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.
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 temp. 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.
ULTRATEMP ETI™ Hybrid Heater Installation and User's Guide
41