Mitsubishi Electric PUHZ-RP125VHA2 Technical Manual

96 pages

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CONTENTS

1. What is ATW heat pump? .......................................................2

2. Heat pump unit_General information ...................................4

3. System design ......................................................................15

4. Interface (I/F) ........................................................................23

5. Flow temp. controller (FTC) .................................................55

6. Requirements........................................................................90

7. System example ...................................................................91

June 2008

Air to Water (ATW) Heat pump,

Interface (I/F) and Flow temp. controller (FTC)

Technical manual

Other manuals for Mitsubishi Electric PUHZ-RP125VHA2

Service Manual150 pages

Technical Data126 pages

Questions and Answers:

T
Timothy DunnAug 7, 2025
What to do if my Mitsubishi Electric Heat Pump water does not heat or cool well?
- S
  Sharon LewisAug 8, 2025
  If your Mitsubishi Electric Heat Pump isn't heating or cooling water effectively, here are a few things you can check: * Clean the filter of the water piping, as a dirty or clogged filter can reduce flow. * Verify the temperature adjustment and adjust the set temperature accordingly. * Ensure that the outdoor unit has plenty of space around it for proper ventilation.
D
Dalton MillerAug 13, 2025
Why is my Mitsubishi Electric Heat Pump emitting water or vapor from the outdoor unit?
- C
  Cassandra PerkinsAug 13, 2025
  The emission of water or vapor from the outdoor unit of your Mitsubishi Electric Heat Pump can occur due to several reasons: * During cooling mode, water may form and drip from the cool pipes and joints. * During heating mode, water may form and drip from the heat exchanger of the outdoor unit. * During defrosting mode, water on the heat exchanger of the outdoor unit evaporates, and water vapor may be emitted.
S
Samuel NguyenAug 20, 2025
What to do if inferior phenomenon is not reoccurring and logged in Mitsubishi Electric Air Conditioner?
- D
  Dana MosleyAug 20, 2025
  If the inferior phenomenon is not reoccurring and is logged, it may be due to temporary defects such as the operation of protection devices in the refrigerant circuit (including the compressor), poor wiring connections, or noise. Here's what you should do: 1. Consider these temporary defects and re-check the symptom. Also, check the installation environment, refrigerant amount, weather conditions when the issue occurred, and wiring. 2. Reset the error code logs and restart the unit after completing the service. 3. Note that there may be no abnormality concerning parts such as electrical components, controller board, or remote controller.
K
Katrina LewisAug 26, 2025
What to do if inferior phenomenon is reoccurring and displayed on Mitsubishi Electric Air Conditioner?
- P
  phallAug 26, 2025
  If the inferior phenomenon is reoccurring and displayed, you should determine the problem and take corrective action according to the “10-4. Self-diagnosis action table.”
J
Janice HendersonAug 31, 2025
What to do if inferior phenomenon is not reoccurring and not logged in Mitsubishi Electric PUHZ-RP125VHA2 Air Conditioner?
- A
  Amber KennedySep 1, 2025
  If the inferior phenomenon is not reoccurring and not logged, follow these steps: 1. Re-check the abnormal symptom. 2. Conduct troubleshooting to ascertain the cause of the inferior phenomenon according to “10-5. Troubleshooting by inferior phenomena”. 3. If the cause is not determined, continue to operate the unit for the time being. 4. Note that there may be no abnormality concerning parts such as electrical components, the controller board, or the remote controller.

Mitsubishi Electric PUHZ-RP125VHA2 Specifications

General

Cooling Capacity	12.5 kW
Heating Capacity	14.0 kW
Refrigerant	R410A
Energy Efficiency Class	A++
Type	Split System
Noise Level (Outdoor)	52 dB

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