Mitsubishi Electric PUHZ-RP250YKA User Manual

SERVICE MANUAL
No.OCH451
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
January 2010
Outdoor unit
[model name]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP125YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP250YKA
[Service Ref.]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP125YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP200YKAR1
PUHZ-RP250YKA
PUHZ-RP60VHA4
PUHZ-RP71VHA4
Revision:
• PUHZ-RP200YKAR1 is added in
REVISED EDITION-A.
• Some descriptions have been
modified.
PARTS CATALOG (OCB451)
CONTENTS
1 TECHNICAL CHANGE ····································2
2 REFERENCE MANUAL ··································2
3 SAFETY PRECAUTION ··································2
4 FEATURES ······················································6
5 SPECIFICATIONS ···········································7
6 DATA ······························································10
7 OUTLINES AND DIMENSIONS ···················· 16
8 WIRING DIAGRAM ······································· 20
9 WIRING SPECIFICATIONS ··························· 26
10 REFRIGERANT SYSTEM DIAGRAM ··············31
11 TROUBLESHOOTING ···································35
12 FUNCTION SETTING ····································94
13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···101
14 EASY MAINTENANCE FUNCTION ·············111
15 DISASSEMBLY PROCEDURE ···················· 116
Note:
• This manual does not cover the
outdoor units. When serving out-
door units, please refer to the serv-
ice manual of outdoor unit and this
manual in a set.
• RoHS compliant products have <G>
mark on the spec name plate.
• Please void OCH451.

Mitsubishi Electric PUHZ-RP250YKA Specifications

General

Brand	Mitsubishi Electric
Model	PUHZ-RP250YKA
Category	Air Conditioner
Language	English

Summary

Technical Changes

Reference Manuals

Indoor Unit Service Manuals

Lists service manuals for various indoor unit models.

Safety Precautions

Always Observe for Safety

General safety instructions before accessing terminals.

Cautions Related to New Refrigerant

Safety precautions for R410A refrigerant.

Precautions When Reusing Existing R22 Refrigerant Pipes

Guidelines for reusing R22 refrigerant pipes.

Refrigerant Leakage Detection Function

Describes the refrigerant leakage detection feature.

Features

Chargeless System

System with pre-charged refrigerant for piping length.

Refrigerant Leakage Detection Function

Function to detect refrigerant leakage over time.

Specifications

Data

Refilling Refrigerant Charge (R410A : kg) PUHZ-RP35~140

Refrigerant charge amounts for specific models.

Adjusting the Amount of Refrigerant PUHZ-RP200/250

Procedure for adjusting refrigerant for specific models.

Compressor Technical Data

Technical data for compressors.

Noise Criterion Curves

Graphs showing noise levels by frequency band.

Standard Operation Data

Standard operating data for various models.

Outlines and Dimensions

Foundation Bolts

Guidelines for foundation bolt installation.

Piping-Wiring Direction

Information on piping and wiring connection direction.

Attaching the Conduit

Instructions for attaching the conduit.

Piping-Wiring Directions

Details on piping and wiring connection directions.

Foundation Bolts

Securing the unit with foundation bolts.

Service Space

Space required for service access.

Free Space (Around the unit)

Recommended free space around the outdoor unit.

Wiring Diagram

Wiring Specifications

Field Electrical Wiring (Power Wiring Specifications)

Specifications for field electrical wiring and power wiring.

Separate Indoor Unit/ Outdoor Unit Power Supplies

Power supply options for separate indoor/outdoor units.

Indoor – Outdoor Connecting Cable

Cable specifications and length limitations for indoor-outdoor connections.

M-NET Wiring Method

Guidelines and methods for M-NET wiring.

M-NET Wiring Method

M-NET Address Setting

Procedure for setting M-NET addresses.

Refrigerant Address Setting

Procedure for setting refrigerant addresses.

Regulations in Address Settings

Rules for address settings in multi-grouping systems.

Refrigerant System Diagram

Troubleshooting

Troubleshooting

General troubleshooting guidance based on error display.

Check Point Under Test Run

Checks to perform before and during test run.

How to Proceed "Self-Diagnosis"

Steps to perform self-diagnosis.

When a Problem Occurs During Operation

Troubleshooting when a problem occurs during operation.

Self-Diagnosis During Maintenance or Service

Accessing error code history for maintenance.

Remote Controller Diagnosis

Diagnosing issues with the remote controller.

Malfunction-Diagnosis Method by Wireless Remote Controller

Method for diagnosing malfunctions using a wireless remote.

Self-Diagnosis Action Table

Table of actions for detected abnormalities.

Troubleshooting by Inferior Phenomena

Troubleshooting based on observed phenomena.

Function Setting

Unit Function Setting by the Remote Controller

Setting unit functions using the remote controller.

Indoor Temperature Detecting

Explanation of indoor temperature detection setting.

Functions Available When Setting Unit Number to 01-03 or AL

Function availability based on unit number and system type.

Selecting Functions Using the Wired Remote Controller

Procedure for selecting functions using a wired remote controller.

Selecting Functions Using the Wireless Remote Controller (Type C)

Procedure for selecting functions using a wireless remote controller.

Function Selection of Remote Controller

Overview of remote controller functions for selection.

Change Language Setting

Setting the display language.

Function Limit Setting

Setting operation function limits.

Mode Selection Setting

Setting the mode selection parameters.

Display Change Setting

Changing display settings.

Monitoring Operation Data by Remote Controller

How to "Monitor the Operation Data"

Guide to monitoring operation data using the remote controller.

Request Code List

List of request codes for monitoring operation data.

Detail Contents in Request Code

Detailed explanations for specific request codes.

Easy Maintenance Function

Maintenance Mode Operation Method

Method for operating maintenance mode.

Guide for Operation Condition

Guide for checking operation conditions.

Initial Settings for Refrigerant Leakage Detection Function

Initial settings for refrigerant leakage detection.

How to Select the "Refrigerant Leakage Detection" Mode

Steps to select the refrigerant leakage detection mode.

How to Start the Initial Learning

Steps to start the initial learning process.

How to Start "Judgment of Refrigerant Leakage" Mode

Procedure to start refrigerant leakage judgment mode.

How to Reset the Initial Condition (Data)

Procedure to reset initial condition data.

Disassembly Procedure

Removing the Top Panel, Service Panel, Front Panel and Back Panel

Steps to remove outer panels.

Removing the Fan Motor

Steps to remove the fan motor.

Removing the Electrical Parts Box

Steps to remove the electrical parts box.

Removing the Thermistor <Outdoor 2-phase Pipe> (TH6) and Thermistor <Outdoor Pipe> (TH3) (TH33)

Steps to remove outdoor pipe and 2-phase pipe thermistors.

Removing the Thermistor <Outdoor> (TH7)

Steps to remove the outdoor thermistor.

Removing the Thermistor <Outdoor Pipe> (TH3) (TH33) and Thermistor <Discharge> (TH4), Thermistor <Shell> (TH32)

Steps to remove outdoor pipe, discharge, and shell thermistors.

Removing the 4-Way Valve Coil (21S4), and LEV Coil (LEV(A), LEV(B)), (LEV(C): only for RP140)

Steps to remove 4-way valve and LEV coils.

Removing the 4-Way Valve

Steps to remove the 4-way valve.

Removing the Linear Expansion Valve

Steps to remove the linear expansion valve.

Removing the High Pressure Switch (63H) (63H1) (63H2)

Steps to remove the high pressure switch.

Removing the Reactor (DCL)

Steps to remove the reactor.

Removing the Compressor (MC)

Steps to remove the compressor.

Removing the Power Receiver

Steps to remove the power receiver.