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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Outdoor unit
[Model Name]
PUHZ-ZRP35VKA
PUHZ-ZRP50VKA
PUHZ-ZRP60VHA
PUHZ-ZRP71VHA
PUHZ-ZRP100VKA
PUHZ-ZRP125VKA
PUHZ-ZRP140VKA
PUHZ-ZRP100YKA
PUHZ-ZRP125YKA
PUHZ-ZRP140YKA
[Service Ref.]
Refer to page 2.
PUHZ-ZRP35VKA
PUHZ-ZRP50VKA
R410A
CONTENTS
1. TECHNICAL CHANGES ································ 2
2. REFERENCE MANUAL ································· 3
3. SAFETY PRECAUTION ································· 3
4. FEATURES ····················································· 7
5. SPECIFICATIONS ·········································· 8
6. DATA ····························································· 10
7. OUTLINES AND DIMENSIONS ··················· 14
8. WIRING DIAGRAM ······································ 17
9. WIRING SPECIFICATIONS ·························· 22
10. REFRIGERANT SYSTEM DIAGRAM ············· 27
11. TROUBLESHOOTING ·································· 30
12. FUNCTION SETTING ··································· 96
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ··108
14. EASY MAINTENANCE FUNCTION ··········· 119
15. DISASSEMBLY PROCEDURE ··················· 126
PARTS CATALOG (OCB527)
July 2014
No. OCH527
REVISED EDITION-C
Revision:
• Added
PUHZ-ZRP35VKAR1,
PUHZ-ZRP35VKAR1-ER,
PUHZ-ZRP35VKAR1-ET,
PUHZ-ZRP50VKAR1,
PUHZ-ZRP50VKAR1-ER,
PUHZ-ZRP50VKAR1-ET,
PUHZ-ZRP60VHAR1,
PUHZ-ZRP60VHAR1-ER,
PUHZ-ZRP60VHAR1-ET,
PUHZ-ZRP71VHAR1,
PUHZ-ZRP71VHAR1-ER and
PUHZ-ZRP71VHAR1-ET in
REVISED EDITION-C.
• Some descriptions have been
modified.
• Please void OCH527
REVISED EDITION-B.
Note:
• This manual describes service
data of the outdoor units only.
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Table of Contents
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Summarization of Contents
Safety Precautions
Always Observe for Safety
Before obtaining access to terminal, all supply circuits must be disconnected.
Cautions Related to New Refrigerant
Cautions for units utilizing refrigerant R410A.
Precautions When Reusing Existing R22 Refrigerant Pipes
Flowchart for reusing existing R22 refrigerant pipes.
Refrigerant Leakage Detection Function
Information on enabling refrigerant leakage detection functionality.
Features
Chargeless System
Pre-charged refrigerant supplied for piping length at shipment.
Refrigerant Leakage Detection Function
System can detect refrigerant leakage which may happen during long use.
Data
Refilling Refrigerant Charge
Table for refilling refrigerant charge based on piping length.
Compressor Technical Data
Technical data related to compressor specifications.
Noise Criterion Curves
Graphs showing noise levels in octave bands for different models.
Standard Operation Data
Table of standard operation data for representative matching.
Outlines and Dimensions
Free Space Around Outdoor Unit
Diagram illustrating required clearance around the outdoor unit.
Foundation Bolts
Information and diagram for securing the unit with foundation bolts.
Piping-Wiring Direction
Details on where piping and wiring connections can be made.
Wiring Specifications
Field Electrical Wiring
Specifications for field electrical wiring, including wire sizes and circuit ratings.
Separate Indoor Unit/Outdoor Unit Power Supplies
Illustrations and details on available indoor/outdoor unit power supply connection patterns.
Indoor – Outdoor Connecting Cable
Specifications for the indoor-outdoor connecting cable, including length and wire size.
M-NET Wiring Method
Guidelines for M-NET wiring, including precautions and earthing methods.
Troubleshooting
Check Point Under Test Run
Steps and checks to perform before and during test runs.
How to Proceed "Self-Diagnosis"
Procedures for performing self-diagnosis using remote controller.
Self-Diagnosis Action Table
Table linking check codes to abnormal points, cases, and actions.
Troubleshooting of Problems
Troubleshooting guide based on phenomena observed by customers.
How to Check the Parts
Instructions for checking various components like thermistors and motors.
Thermistor Feature Chart
Charts detailing thermistor features and resistance values.
Emergency Operation
Procedure and conditions for operating the unit in emergency mode.
Test Point Diagram
Diagrams showing test points on outdoor controller circuit boards.
Function of Switches, Connectors and Jumpers
Details on the functions of various switches, connectors, and jumpers.
Function Setting
Unit Function Setting by the Remote Controller
How to set unit functions using the wired remote controller.
Selecting Functions using the Wired Remote Controller
Explanation of the menu structure for function selection.
Selecting Functions using the Wireless Remote Controller (Type C)
Step-by-step guide for selecting functions with a wireless remote controller.
Function Selection of Remote Controller
Guide to function buttons and their roles on different screens.
Selecting Functions using the Wired Remote Controller
Flowchart and procedure for selecting functions via remote controller.
Monitoring the Operation Data by the Remote Controller
How to "Monitor the Operation Data"
Procedure to confirm operation data like thermistor temps and error history.
Easy Maintenance Function
Smooth Maintenance
Procedure to display maintenance data like temps and operation current.
Initial Settings for Refrigerant Leakage Detection Function
Steps for initial learning to enable refrigerant leakage detection.
Disassembly Procedure
Removing the Service Panel and Top Panel
Step-by-step guide to remove external panels and grille.
Removing the Fan Motor (MF1)
Procedure to remove the fan motor assembly.
Removing the Electrical Parts Box
Procedure to remove the electrical parts box and disconnect components.
Removing the Thermistor (TH6)
Procedure to remove the thermistor for outdoor 2-phase pipe.
Removing the Thermistor (TH7)
Procedure to remove the thermistor for outdoor ambient temperature.
Removing the Thermistor (TH3) (TH33) and Thermistor (TH4), Thermistor (TH32)
Procedures to remove outdoor pipe, discharge, and comp. surface thermistors.
Removing the 4-Way Valve Coil (21S4), and LEV Coil (LEV(A), LEV(B)), (LEV(C): 140 only)
Procedure to remove the 4-way valve coil and LEV coils.
Removing the 4-Way Valve
Procedure to remove the 4-way valve assembly.
Removing LEV
Procedure to remove the LEV coil.
Removing the High Pressure Switch (63H)
Procedure to remove the high pressure switch.
Removing the Reactor (DCL)
Procedure to remove the reactor.
Removing the Compressor (MC)
Procedure to remove the compressor.
Removing the Power Receiver
Procedure to remove the power receiver.
Removing the Power Receiver (for larger models)
Procedure to remove the power receiver for larger models.
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