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Mitsubishi Electric PUMY-P300YBM-ER.TH User Manual

Mitsubishi Electric PUMY-P300YBM-ER.TH
154 pages
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TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
HFC
utilized
R410A
PARTS CATALOG (OCB760)
CONTENTS
1. SAFETY PRECAUTION
....................................
2
2. OVERVIEW OF UNITS
......................................
6
3. SPECIFICATIONS
...........................................
10
4. DATA
................................................................
11
5. OUTLINES AND DIMENSIONS
......................
22
6. WIRING DIAGRAM
.........................................
23
7.
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
.....
24
8. TROUBLESHOOTING
....................................
40
9. ELECTRICAL WIRING
...................................
111
10. REFRIGERANT PIPING TASKS
....................
117
11. DISASSEMBLY PROCEDURE
.......................
125
12. REMOTE CONTROLLER
...............................
130
Note:
This service manual
describes technical data
of the outdoor units only.
As for indoor units, refer
to its service manual.
No. OCH760
May 2021
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
<Outdoor unit>
[Model Name] Service Ref.
PUMY-P250YBM
PUMY-P250YBM.TH
PUMY-P300YBM
PUMY-P300YBM.TH
PUMY-P250YBM-ER
PUMY-P250YBM-ER.TH
PUMY-P300YBM-ER
PUMY-P300YBM-ER.TH
PUMY-P250YBM-ET
PUMY-P250YBM-ET.TH
PUMY-P300YBM-ET
PUMY-P300YBM-ET.TH
Salt proof model
PUMY-P250YBM-BS
PUMY-P250YBM-BS.TH
PUMY-P300YBM-BS
PUMY-P300YBM-BS.TH
PUMY-P250YBM-ERBS
PUMY-P250YBM-ERBS.TH
PUMY-P300YBM-ERBS
PUMY-P300YBM-ERBS.TH
PUMY-P250YBM-ETBS
PUMY-P250YBM-ETBS.TH
PUMY-P300YBM-ETBS
PUMY-P300YBM-ETBS.TH

Table of Contents

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Mitsubishi Electric PUMY-P300YBM-ER.TH Specifications

General IconGeneral
ModelPUMY-P300YBM-ER.TH
Cooling Capacity30.0 kW
Heating Capacity33.5 kW
RefrigerantR410A
Dimensions (Outdoor Unit)1338 x 1050 x 330 mm
TypeOutdoor Unit
Power Supply380-415V, 50Hz

Summary

1 SAFETY PRECAUTION

1-1. CAUTIONS RELATED TO NEW REFRIGERANT

Details precautions for handling new refrigerants like R410A, emphasizing proper tools and practices.

3 SPECIFICATIONS

3-1. OUTDOOR UNIT

Presents detailed specifications for the outdoor units, covering capacity, power, temperature ranges, and dimensions.

5 OUTLINES AND DIMENSIONS

5-1. OUTDOOR UNIT

Provides detailed outlines and dimensions for the outdoor unit, including service space and piping/wiring directions.

8 TROUBLESHOOTING

8-1. CHECKPOINTS FOR TEST RUN

Details procedures and checks to be performed before conducting a test run of the unit.

8-1-3. Countermeasures for Error During Test Run

Provides countermeasures for errors detected during test runs, including self-diagnosis functions.

8-6. HOW TO CHECK THE PARTS

Provides methods and resistance values for checking various components like thermistors and solenoid valves.

8-7. HOW TO CHECK THE COMPONENTS

Details resistance characteristics for low, medium, and high-temperature thermistors.

10 REFRIGERANT PIPING TASKS

10-1. REFRIGERANT PIPING SYSTEM

Details the refrigerant piping system, including permissible lengths and kit selection.

10-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

Outlines precautions against refrigerant leakage, including R410A concentration limits and confirmation procedures.

11 DISASSEMBLY PROCEDURE

11-1. OUTDOOR UNIT

Provides a step-by-step guide with photos for disassembling the outdoor unit components.

12 REMOTE CONTROLLER

12-1. REMOTE CONTROLLER FUNCTIONS

Explains the functions and operations of the remote controller interface and buttons.

12-2. ERROR INFORMATION

Explains how to check and reset error information displayed on the remote controller.

12-3. SERVICE MENU

Guides on accessing and using the Service menu, including password entry and navigation.

12-4. TEST RUN

Details the procedure for performing test runs on the unit using various remote controller models.

12-5. FUNCTION SETTING

Explains how to set various functions like M-NET address, function numbers, and operational settings.

12-6. ERROR HISTORY

Describes how to view and delete error history records from the remote controller.

12-7. SELF-DIAGNOSIS

Guides on performing self-diagnosis for the unit using the remote controller.

12-8. REMOTE CONTROLLER CHECK

Explains how to diagnose issues with the remote controller itself using its built-in check function.

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