Mitsubishi Electric PUY-P200 User Manual

Models PUHY-P200, P250, P300, P350, P400YGM-A
PUHY-P450, P500, P550, P600, P650YGM-A
PUY-P200, P250, P300, P350YGM-A
Service Handbook
AIR CONDITIONERS CITY MULTI

Mitsubishi Electric PUY-P200 Specifications

General

Brand	Mitsubishi Electric
Model	PUY-P200
Category	Air Conditioner
Language	English

Summary

Safety Precautions

Warning : Carefully read the labels affixed to the main unit.

Emphasizes reading all unit labels for safety.

Before installing the unit, be sure to carefully read all of the following safety precautions.

Stresses the importance of reading all safety precautions before installation.

Precautions for Handling Units for Use with R410A

Do not use the existing refrigerant piping

Warns against using old refrigerant piping with R410A systems.

Use refrigerant pipes made of C1220 phosphorus deoxidized copper...

Specifies approved materials and conditions for refrigerant piping.

Do not use the following tools that have been used with the conventional refrigerants.

Lists tools that are incompatible with R410A.

Use a vacuum pump with a reverse-flow-check valve.

Recommends specific vacuum pump equipment for R410A.

Before Installing the Unit

Warning

General warning before installation.

Store the piping to be used during installation indoors...

Use a small amount of ester oil, ether oil or alkylbenzene...

Do not use a charging cylinder.

Warns against using charging cylinders with R410A.

Exercise special care when handling the tools.

Only use R410A refrigerant.

Emphasizes using only R410A refrigerant.

Use liquid refrigerant to charge the system.

Recommends charging with liquid refrigerant.

Do not install the unit in a place where there is a possibility of flammable gas leak.

Advises against installing in areas with flammable gas.

Before Installing (Relocating) the Unit or Performing Electric Work

Do not spray water on the air conditioners or immerse the air conditioners in water.

Warns against water contact with the unit due to electric shock risk.

Install a breaker for current leakage at the power source to avoid the risk of electric shock.

Recommends an earth leakage breaker for shock protection.

Use wires that are specified in the installation manual.

Emphasizes using specified wiring to prevent electrical hazards.

Periodically check the platform on which the unit is placed for damage to prevent the unit from falling.

Ground the unit.

Details proper grounding procedures and warnings.

Use breakers and fuses (electrical current breaker, remote switch <switch + Type-B fuse>, molded case circuit breaker) with a proper current capacity.

When installing draining pipes, follow the instructions in the manual, and make sure that they properly drain water so as to avoid dew condensation.

Make sure the wires are not subject to tension.

Before the Test Run

Caution

General caution before initiating a test run.

Turn on the unit at least 12 hours before the test run.

Do not turn off the power immediately after stopping the unit.

Do not operate the unit without panels and safety guards in their proper places.

Emphasizes operating the unit only with panels and guards installed.

Do not touch the refrigerant pipes with bare hands during and immediately after operation.

Warns against touching hot or cold refrigerant pipes.

Do not operate switches with wet hands to avoid electric shock.

Advises against operating switches with wet hands.

Do not operate the unit without air filters.

1 Read Before Servicing

[1] Items to Be Checked

[2] Necessary Tools and Materials

[3] Piping Materials

[7] Airtightness Test

[8] Vacuuming

[9] Vacuum Drying

[10] Changing Refrigerant

[11] Remedies to be taken in case of a refrigerant leak

5 Electrical Wiring Diagram

[1] PUHY-P200, P250, P300, P350, P400YGM-A / PUY-P200, P250, P300, P350YGM-A

[2] PUHY-P450, P500, P550, P600, P650YGM-A

6 Refrigerant Circuit

[1] Refrigerant Circuit Diagram

Illustrates the refrigerant flow for various models.

8 Test Run

[1] Check Items before Test Run

[2] Test Run Method

[3] Operating Characteristics and Refrigerant Amount

[4] Adjustment and Judgment of Refrigerant Amount

Guides on adjusting and judging the refrigerant amount.

[5] Refrigerant Volume Adjustment Mode Operation

Details the process for adjusting refrigerant volume.

9 Troubleshooting

[1] Check Code List

A comprehensive list of error codes and their meanings.

[2] Responding to Error Display on the Remote Controller

Provides guidance on addressing remote controller error displays.

[3] Investigation of Transmission Wave Shape/Noise

[4] Troubleshooting of Principal Parts

Detailed troubleshooting for major components.

[5] Refrigerant Leak

Procedures for locating and repairing refrigerant leaks.

[6] Compressor Replacement Instructions (only P450-P650 types)