Pentair ULTRATEMP 140 - User Manual

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ULTRATEMP

®

HEAT PUMP

INSTALLATION AND

USER’S GUIDE

IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE INSTRUCTIONS

ESPAÑOL

ENGLISH

FRANÇAIS

Table of Contents

Questions and Answers:

J
Jill CollinsAug 22, 2025
What causes a low refrigerant alarm on a Pentair Heat Pump?
- A
  Anthony HernandezAug 22, 2025
  A low refrigerant alarm on your Pentair Heat Pump can occur due to several reasons. The most common cause is low refrigerant in the system, which requires locating and fixing the refrigerant leak, then pulling a vacuum and recharging the system. It can also happen if the air and water temperatures are too cold for the heat pump to operate; in this case, wait for warmer temperatures. A faulty refrigerant low-pressure switch can also trigger the alarm; check its resistance with a full charge and replace it if open. Lastly, a faulty fan, capacitor or fan motor could be the problem; inspect these components and replace if needed, also check the fan blade and make sure it is not slipping or broken and replace if needed.
B
Brittany WattsAug 25, 2025
What to do if Pentair ULTRATEMP 140 Heat Pump shows LOW WATER FLOW alarm?
- D
  ddaltonAug 25, 2025
  If your Pentair Heat Pump displays a LOW WATER FLOW alarm, it means the pressure switch isn't sensing water flow. Here's what you should check: * First, ensure your water circulation pump is running. * Second, check for sufficient water flow by cleaning dirty or worn filters and clogged lint traps. Backwash if needed, or replace the filter element. Inspect and clean the pump impeller. Adjust plumbing valves and repair any suction air leaks. * Third, make sure any external water bypass around the heat pump is closed. * Finally, with water flowing, check the resistance of the water pressure switch; if it's open, replace the switch.
M
Melissa HayesAug 26, 2025
Why is the fan not turning on my Pentair ULTRATEMP 140?
- J
  Jimmy LarsenAug 27, 2025
  If your Pentair Heat Pump has power and the set temperature is above the actual temperature, but the fan isn't turning and there are no alarms, it could be due to a faulty fan relay, capacitor, fan motor, control board failure, or incorrect wiring. Contact a dealer for guidance before attempting to replace any parts. Potential solutions include replacing the fan relay, capacitor, fan motor, or control board.
D
desiree83Aug 27, 2025
Why won't my Pentair Heat Pump start?
- D
  Dennis FordAug 28, 2025
  If your Pentair Heat Pump has power, the green light is on, and the set temperature is above the actual temperature, but the unit won't start heating or cooling and there are no alarms, it could be due to the remote feature being enabled without a controlling device connected. Check to see if the Remote feature on the Control Board is enabled and disable it if needed. Another possibility is a control failure, in which case you should contact a dealer or the factory for advice before attempting to replace parts, but replacing the control board may be necessary.
K
Kelli AndersonAug 29, 2025
What to do if Pentair ULTRATEMP 140 Heat Pump displays HIGH WATER TEMP alarm?
- L
  Laura WalshAug 29, 2025
  If your Pentair Heat Pump is showing a HIGH WATER TEMP alarm (water temperature above 107°F [41.7°C]), the issue might be a bad thermistor or a faulty control board. Verify the water temperature to see if it is correct. If it is not, use the 10k ohm resistance test to verify the thermistor. If the thermistor is bad, replace it. If the thermistor is good, then replace the control board.
S
Shawn StephensonAug 31, 2025
Why Pentair ULTRATEMP 140 Heat Pump shows LOW WATER TEMP alarm?
- G
  Gina MillerAug 31, 2025
  If your Pentair Heat Pump displays a LOW WATER TEMP alarm (water temperature below 40°F [4.4°C]), a potential cause is a faulty thermistor or a bad control board. To resolve this, first test the water temperature to ensure it's accurate. If the temperature reading is incorrect, use the 10k ohm resistance test to check the thermistor. Replace the thermistor if it's defective; otherwise, replace the control board.
K
Kimberly SmithSep 2, 2025
What to do if Pentair ULTRATEMP 140 Heat Pump shows LOW WATER TEMP alarm because of debris?
- J
  James DuranSep 2, 2025
  If your Pentair Heat Pump displays a LOW WATER TEMP alarm, and the cause is debris shorting the connections, remove the debris or replace the PCB.
L
Lindsay RogersSep 4, 2025
How to fix a brownout alarm on my Pentair ULTRATEMP 140 Heat Pump?
- C
  Craig WagnerSep 4, 2025
  To address a brownout alarm on your Pentair Heat Pump, start by checking the supply voltage to the transformer, it should be between 208 and 260 volts, and the transformer's output, which should be between 24 and 28 volts; replace the transformer if the output is below this range. Also, check the supply voltage to the heat pump, ensuring it's between 208 and 260 volts, and verify that there isn't a phase outage, with 120 volts to ground and 240 volts across power legs. If voltage issues persist, consider installing a boost transformer closer to the heat pump to maintain proper voltage levels.
M
millersandraSep 5, 2025
Why is my Pentair ULTRATEMP 140 Heat Pump showing a high water temperature alarm?
- C
  Christian CrawfordSep 6, 2025
  A high water temperature alarm on your Pentair Heat Pump indicates that the water temperature is above 107°F [41.7°C]. This can be due to a bad thermistor or a bad control board. Test the water temperature to ensure it's accurate. If the temperature reading is incorrect, use a 10k ohm resistance test to verify the thermistor. Replace the thermistor if it's faulty; otherwise, replace the control board.
R
Rodney HarrisSep 7, 2025
Why is ice forming on my Pentair ULTRATEMP 140?
- A
  Andres Clayton Jr.Sep 7, 2025
  Ice or frost forming on the outer air coil of your Pentair Heat Pump, typically at the bottom, can occur if the discharge air flow is restricted. Ensure the heater is installed with the required placement clearances for air flow and roof clearance, and do not install it indoors. Also, ensure sprinklers do not spray on the heater. Another cause could be that the outside air temperature is too low and the defrost feature is not enabled. Make sure heater is installed with the required placement clearances for air flow and roof clearance, and do not install it indoors. If ice forms, shut off the heater and allow the ice to thaw.

Pentair ULTRATEMP 140 Specifications

General

Model	ULTRATEMP 140
Category	Heat Pump
Refrigerant	R-410A
Voltage	230V
Phase	Single
Frequency	60 Hz
Rated Amperage	30 A
Operating Range	50°F - 104°F
Heating Capacity	140, 000 BTU/hr

Summary

IMPORTANT WARNING AND SAFETY INSTRUCTIONS

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION

Critical safety warning about electrical hazards during installation.

Consumer Information and Safety

Safety rules and guidelines for operating the heat pump.

UltraTemp Heat Pump Overview

Heat Pump Installation Requirements

Essential prerequisites for safe and proper heat pump installation.

INSTALLATION AND LOCATION

Location and Clearances

Water Connections and Plumbing

Water Connections to the Heat Pump

Water Pressure Switch Adjustment

Electrical Connections and Wiring

Main Power

Step-by-step guide for connecting the heat pump to the electrical source.

Wiring Diagram - (Single Phase - 50 Hz;60 Hz)

Wiring Diagram - (Three Phase - 60 Hz)

CONNECTING TO AN AUTOMATION SYSTEM

Connecting the Heat Pump to the IntelliTouch or EasyTouch Control System Load Center via the Heat Pump Spade Terminals

Connecting the Heat Pump to the IntelliTouch or EasyTouch Control System Load Center via the RS-485 Connector

Pin Configuration for the Heat Pump Control Board to IntelliTouch Control System

Connecting the IntelliTouch or EasyTouch to Heat Pump

OPERATING THE HEAT PUMP

Heat Pump Control Panel Overview

Explanation of the heat pump's control panel buttons and indicators.

Operator Menu Tree Guide

Using the Control Panel

Starting and Stopping the Heat Pump

Instructions on how to turn the heat pump on and off.

Changing the Set Point (Temperature)

How to adjust the desired pool or spa water temperature.

Control Panel Alarm Messages

Service Menu Tree Guide

MAINTENANCE

Water Chemistry

Recommended water chemistry ranges for optimal heat pump performance and longevity.

Winterizing

Steps to properly prepare the heat pump for winter to prevent damage.

Spring Start Up

Procedures for starting the heat pump after winterizing.

Inspection and Service

Guidelines for regular user inspections of the heat pump.

Professional Maintenance and Service

TECHNICAL INFORMATION

Electrical Supply - Voltage Requirements

Table detailing electrical specifications for various models.

REPLACEMENT PARTS

Parts List

List of all available replacement parts with numbers.

TROUBLESHOOTING

HIGH WATER TEMPAlarm

Troubleshooting steps for high water temperature alarms.

LOWWATER TEMPAlarm

LOWWATER FLOWAlarm

Troubleshooting steps for low water flow alarms.

HIGH REFRIGAlarm

LOWREFRIGAlarm

Higher than Normal Head Pressure

Lower than Normal Head Pressure

Unit runs, but breaker trips continuously

Problems and Corrective Action (3 Phase Units Only)

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