EasyManua.ls Logo

Mitsubishi PLH-3AK.UK - User Manual

Mitsubishi PLH-3AK.UK
90 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES·······················2
2. PART NAMES AND FUNCTIONS········3
3. SPECIFICATIONS·································7
4. DATA ···················································11
5. OUTLINES AND DIMENSIONS··········24
6. WIRING DIAGRAM·····························26
7.
REFRIGERANT SYSTEM DIAGRAM
······27
8. OPERATION FLOW-CHART··············28
9. MICROPROCESSOR CONTROL·······32
10. TROUBLESHOOTING························54
11. 4-WAY AIR FLOW SYSTEM···············66
12. SYSTEM CONTROL···························72
13. DISASSEMBLY PROCEDURE···········77
14. PARTS LIST········································80
15. OPTIONAL PARTS·····························85
Indoor unit
[Model names] [Service Ref.]
PLH-3AK PLH-3AK.UK
PLH-3AK
1.UK
PLH-3AKH PLH-3AKH.UK
PLH-3AKH
1.UK
PLH-4AKS PLH-4AKS.UK
PLH-4AKS
1.UK
PLH-4AKHS PLH-4AKHS.UK
PLH-4AKHS
1.UK
PLH-5AKS PLH-5AKS.UK
PLH-5AKS
1.UK
PLH-5AKHS PLH-5AKHS.UK
PLH-5AKHS
1.UK
PLH-6AKS PLH-6AKS.UK
PLH-6AKS
1.UK
PLH-6AKHS PLH-6AKHS.UK
PLH-6AKHS
1.UK
Note:
• This manual does not cover the
following outdoor units. When ser-
vicing them, please refer to the
following service manual and this
manual in a set.
[Service Ref.]
(OC150 REVISED EDITION-A)
PUH-3VKA2.UK PUH-3YKA2.UK
PUH-4YKSA2.UK
PUH-5YKSA2.UK
PUH-6YKSA2.UK
(OC184)
PUH-4VKSA.UK
INDOOR UNIT
Ceiling Cassettes
Series PLH
FILTER
CHECK MODE
TEST RUN
WIRED REMOTE
CONTROLLER
• Please void OC211.
Revision:
• PLH-3AK
1.UK, PLH-3AKH1.UK,
PLH-4AKS1.UK, PLH-4AKHS1.UK,
PLH-5AKS1.UK, PLH-5AKHS1.UK,
PLH-6AKS1.UK and
PLH-6AKHS1.UK are added in
REVISED EDITION-A.
• “14. PARTS LIST” has been
modified.
No. OC211
REVISED EDITION-A
SPLIT-TYPE, HEAT PUM PAIR CONDITIONERS
ON/OFF
WIRELESS REMOTE
CONTROLLER
ON/OFF TEMP
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
PLH- •AK.UK PLH- •AK1.UK
PLH- •AKH.UK PLH- •AKH1.UK
PLH- •AKS.UK PLH- •AKS1.UK
PLH- •AKHS.UK PLH- •AKHS1.UK
Model name
indication
OC211-A--1.qxp 04.9.28 4:39 PM Page 1

Table of Contents

Questions and Answers

  • M
    Michael EstradaAug 3, 2025
    Why Mitsubishi PLH-3AK.UK Air Conditioner remote controller display does not appear?
    • R
      Richard McfarlandAug 3, 2025
      If the Mitsubishi Air Conditioner remote controller display doesn't appear when you press the power button: * First, measure the voltage between the terminals of the remote controller. If there's no voltage, remove the terminals and measure the voltage between the wires. If the voltage is between 6VDC and 12V, replace the remote controller. * Second, check for a short circuit in the transmission wire, bad contact at indoor CN40, whether CN40 is attached to a sub unit, a damaged power board, bad contact of CN2D, a blown fuse, or if the circuit breaker is OFF. If none of these are defective, replace the indoor controller board.
  • Z
    zbuchananAug 10, 2025
    What to do if Mitsubishi PLH-3AK.UK operating display appears, but disappears soon?
    • B
      Betty MoralesAug 10, 2025
      If the operating display on your Mitsubishi Air Conditioner remote appears briefly and then disappears, the issue might be: * A short circuit in the indoor/outdoor connecting wire. * A short circuit in the transmission wire. * Interference from noise waves emitted by other appliances. To resolve this: * Check the wiring for any shorts. * Turn the circuit breaker OFF and then ON again. If the problem persists, replace the indoor controller board.
  • K
    Krystal FoxAug 17, 2025
    How to fix Mitsubishi PLH-3AK.UK Air Conditioner display 'CENTRALLY CONTROLLED' on remote controller?
    • M
      meganmacdonaldAug 17, 2025
      If the 'CENTRALLY CONTROLLED' display on your Mitsubishi Air Conditioner remote controller won't disappear, it could be due to: * Incorrect address settings for the remote controller or indoor controller board. * A timer adapter connected to the remote controller. * Signal transmission errors between the indoor unit and remote controller. To address this: * Check the address settings of the remote controller and indoor controller. * Ensure the timer adapter is correctly used. * Try turning DIP SW17-7 ON on another remote controller to make it a sub-controller, connect it to the unit, and turn the circuit breaker ON. If the 'centrally controlled' display disappears, replace the original remote controller. If it remains, replace the indoor controller board.
  • K
    Kimberly JohnsonAug 27, 2025
    What does 'EO' mean on my Mitsubishi PLH-3AK.UK Air Conditioner remote controller?
    • N
      Nathan HawkinsAug 27, 2025
      If the check code 'EO' appears when you turn on the Mitsubishi Air Conditioner remote controller, it indicates a signal transmission error between the indoor unit and the remote controller. To troubleshoot: 1. Connect a sub remote controller. 2. Turn the circuit breaker ON. If the display 'centrally controlled' remains, replace the indoor controller board. 3. If the display disappears, turn the remote controller POWER button ON and check the remote controller and sub remote controller for malfunctions of indoor unit and remote controller.

Mitsubishi PLH-3AK.UK Specifications

General IconGeneral
BrandMitsubishi
ModelPLH-3AK.UK
CategoryAir Conditioner
LanguageEnglish

Related product manuals