Mitsubishi Electric PKA-A18HAL User Manual

36 pages

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SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SPLIT-TYPE, AIR CONDITIONERS

NOTE:

• This manual describes

only service data of the

indoor units.

• RoHS compliant products

have <G> mark on the

spec name plate.

CONTENTS

1. REFERENCE MANUAL

...................................

2. SAFETY PRECAUTION

...................................

3. PART NAMES AND FUNCTIONS

...................

4. SPECIFICATIONS

............................................

5. NOISE CRITERION CURVES

..........................

6. OUTLINES AND DIMENSIONS

.......................

7. WIRING DIAGRAM

.........................................10

8. REFRIGERANT SYSTEM DIAGRAM

............

9. TROUBLESHOOTING

....................................

10. SPECIAL FUNCTION

.....................................

11. DISASSEMBLY PROCEDURE

.......................

Indoor unit

[Model names] [Service Ref.]

PARTS CATALOG (OCB456)

No. OCH456

March 2009

INDOOR UNIT

PKA-A12HA

PKA-A18HA

PKA-A12HAL

PKA-A18HAL

ON/OFF

TEMP.

COOL

DRY

AUTO

FAN

HEAT

3 3 2 2 3

WIRED REMOTE

CONTROLLER

WIRELESS REMOTE

CONTROLLER

Questions and Answers:

D
dsmithAug 5, 2025
What to do if the trouble is not reoccurring and is logged in Mitsubishi Electric PKA-A18HAL?
- J
  jenna75Aug 5, 2025
  If a logged trouble with your Mitsubishi Electric Air Conditioner is not reoccurring, it might be due to temporary defects such as protection devices in the refrigerant circuit including compressor, poor wiring connections or noise. Re-check the symptom, installation environment, refrigerant amount and weather conditions when the issue occurred, as well as wiring. After servicing, reset the error code logs and restart the unit. This indicates no abnormality in the electrical components, controller board, or remote controller.
J
James FlemingAug 20, 2025
What to do if trouble is not reoccurring and is not logged in Mitsubishi Electric Air Conditioner?
- R
  Roberta DavisAug 21, 2025
  If a trouble with your Mitsubishi Electric Air Conditioner is not reoccurring and is not logged, re-check the abnormal symptom. Conduct troubleshooting and find the cause of the trouble according to the troubleshooting guide for inferior phenomena. If the cause is not found, continue to operate the unit for the time being. This indicates that there is no abnormality concerning parts such as the electrical component, controller board, or remote controller.

Mitsubishi Electric PKA-A18HAL Specifications

General

Cooling Capacity	5.0 kW
Power Supply	220-240V, 50Hz
Refrigerant	R32
Weight (Indoor Unit)	9 kg
Weight (Outdoor Unit)	30 kg
Type	Air Conditioner
Outdoor Unit Dimensions (W x H x D)	780 x 540 x 269 mm
Operating Temperature (Heating)	-15°C to 24°C