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Mitsubishi Electric Mr.SLIM PEH Series User Manual

Mitsubishi Electric Mr.SLIM PEH Series
60 pages
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TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. FEATURES ···········································2
2. PART NAMES AND FUNCTIONS········3
3. SPECIFICATIONS·································6
4. DATA·····················································8
5. OUTLINES AND DIMENSIONS··········14
6. WIRING DIAGRAM·····························18
7.
REFRIGERANT SYSTEM DIAGRAM
······19
8. OPERATION FLOW-CHART··············20
9. MICROPROCESSOR CONTROL·······24
10. TROUBLESHOOTING························41
11. DISASSEMBLY PROCEDURE···········49
12. PARTS LIST········································51
13. OPTIONAL PARTS ·····························55
Indoor unit
PEH-2.5EKHA
PEH-3EKHA
PEH-4EKHSA
PEH-5EKHSA
No. OC153
[Models]
PEH-2.5EKHA2.TH
PEH-3EKHA
2.TH
PEH-4EKHSA
2.TH
PEH-5EKHSA
2.TH
[Service Ref.]
This manual does not cover the following
outdoor units. When servicing them,
please refer to the service manual
No.OC128,150 and this manual in a set.
[Service Ref.]
PUH-2.5VKA
2
PUH-3VKA2,3YKA2
PUH-4YKSA3
PUH-5YKSA3
PUH-2.5VKA2.UK
PUH-3VKA2.UK
PUH-3YKA
2.UK
PUH-4YKSA2.UK
PUH-5YKSA2.UK
Indoor unit
Ceiling Concealed
Series PEH
The Slim Line.
From Mitsubishi Electric.
FILTER
CHECK MODE
TEST RUN
Remote controller
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Mitsubishi Electric Mr.SLIM PEH Series Specifications

General IconGeneral
RefrigerantR410A
SeriesPEH
TypeHeat Pump
Indoor Unit TypeWall-mounted
Power Supply220-240 V, 50 Hz
Operating Temperature (Cooling)Varies by model
Operating Temperature (Heating)Varies by model

Summary

Features

Totally Invisible Indoor Unit Behind the Ceiling

Highlights the unit's ability to be hidden above the ceiling for flexible interior design.

Most Suitable for Simultaneous Two Rooms Air Conditioning

Explains suitability for cooling/heating two rooms simultaneously using air ducts.

High External Static Pressure

Mentions acceptable external static pressure allowing for extensive duct usage.

Advanced Microprocessor

Details features like user-friendly operation, LCD display, and self-diagnostic capabilities.

Part Names and Functions

Indoor (Main) Unit

Identifies and illustrates the components of the indoor unit, including air intake and outlets.

Remote Controller Operation

Describes the functions of various buttons and displays on the remote controller.

Remote Controller Display

Explains the meaning of different display indicators on the remote controller.

Specifications

Indoor Unit Specifications

Provides detailed technical specifications for the indoor units.

Outdoor Unit Specifications

Lists technical specifications for the outdoor units.

Refrigerant Piping Specifications

Details specifications related to refrigerant pipe size and connection methods.

Data

Performance Data - Cooling Capacity

Presents cooling capacity data based on varying indoor and outdoor conditions.

Performance Data - Heating Capacity

Presents heating capacity data based on varying indoor and outdoor conditions.

Outlines and Dimensions

Indoor Units Dimensions (PEH-2.5/3EKHA2.TH)

Shows dimensional drawings and part labels for indoor units.

Wiring Diagram

Wiring Diagram Components

Lists and defines the symbols used in the wiring diagram.

Indoor/Outdoor Unit Wiring

Shows the detailed wiring connections between indoor and outdoor units.

Refrigerant System Diagram

PEH-2.5/3EKHA2.TH/PUH-2.5/3VKA2(.UK)/PUH-3YKA2(.UK) Diagram

Illustrates the refrigerant flow for specific indoor/outdoor unit combinations.

PEH-4EKHSA2.TH/PUH-4YKSA3(2.UK) Diagram

Shows the refrigerant system for PEH-4EKHSA2.TH and PUH-4YKSA3(2.UK) units.

PEH-5EKHSA2.TH/PUH-5YKSA3(2.UK) Diagram

Depicts the refrigerant system for PEH-5EKHSA2.TH and PUH-5YKSA3(2.UK) units.

Operation Flow-Chart

Main Operation Flow-Chart

Outlines the primary operation sequence of the air conditioning system.

Cooling Operation Flow-Chart

Details the operational logic and steps for cooling mode.

Dry Operation Flow-Chart

Illustrates the operational logic and steps for dry mode.

Heating Operation Flow-Chart

Explains the operational logic and steps for heating mode.

Microprocessor Control

Outline of Microprocessor Control

Provides an overview of the microprocessor control system and its inputs/outputs.

Indoor Unit Control

Explains the control logic for the indoor unit, including compressor and fan operation.

Timer Operation

Details the functions and settings for the timer operation.

Emergency Operation

Describes how to perform emergency operation and set dipswitches.

Dip Switch Functions

Explains the purpose and settings of various dip switches on the controllers.

Outdoor Unit Control

Outdoor Fan Control

Describes how the outdoor fan speed is controlled based on coil temperature.

Outdoor Unit Control Logic

Explains how the outdoor unit turns ON/OFF based on indoor unit commands.

Protective Functions

Details various protective functions and their indicators.

Cool/Heat Operation Time Chart

Illustrates the timing of operations for compressor, valves, and fan in cooling/heating.

Troubleshooting

Troubles in Test Run

Lists common issues encountered during test runs and their solutions.

Self Diagnostic Function

Explains how to use the self-diagnostic feature and interpret error codes.

Troubleshooting According to Check Code

Provides a detailed guide to diagnosing issues based on check codes displayed.

When Outdoor Unit Does Not Work

Offers troubleshooting steps for scenarios where the outdoor unit is unresponsive.

Wrong Wiring on Site

Identifies wiring errors and their resulting operational phenomena.

Other Troubles and Causes

Covers miscellaneous troubleshooting topics and potential causes.

Mr. SLIM/LOSSNAY Interlock Operation

Addresses symptoms that are not malfunctions in the interlock system.

Disassembly Procedure

Indoor Unit Disassembly (PEH-3EKHA2.TH)

Provides step-by-step instructions for disassembling the indoor unit.

Fan Removal

Details the procedure for removing the fan assembly from the indoor unit.

Heater Removal

Explains the steps required to remove the heater element.

Parts List

Structural Parts

Lists all structural components of the indoor units with part numbers and quantities.

Electrical Parts

Lists all electrical components of the indoor units with part numbers and quantities.

Optional Parts

Refrigerant Pipes

Lists optional refrigerant pipe kits and their specifications.

Timer

Details specifications and features of the program timer.

Multiple Remote Controller Adapter

Describes the adapter for remote indication and its connection.

Centralized Remote Controller

Explains the centralized controller for managing multiple units.

Program Timer Adapter

Details the adapter needed for program timer or centralized controller use.

Optional Remote Controller

Introduces an optional remote controller for managing two controllers.

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