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Mitsubishi Electric PKH18FK1 - User Manual

Mitsubishi Electric PKH18FK1
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TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. PCH Series ··································OC193-1
2. PLH Series ··································OC195-1
3. PKH Series ··································OC197-1
4. PLH Series ··································OC244-1
Wall Mounted
Series PKH
PKH18FK1
PKH24FK1
PKH30FK1
PKH36FK1
Ceiling Suspended
Series PCH
PCH24EK1
PCH30EK1
PCH36EK1
PCH42EK1
No. OC255
REVISED EDITION-B
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TM
[Models]
[Models]
Ceiling Cassettes
Series PLH
PLH18AK,
PLH24AK,
PLH30AK,
PLH36AK,
PLH42AK,
PLH18FK1
PLH24FK1
PLH30FK1
PLH36FK1
PLH42FK1
[Models]
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Revision:
•PKH18FK, PKH24FK,PKH30FK,PKH36FK is
deleted.
•PCH24EK, PCH30EK, PCH36EK, PCH42EK is
deleted.
•PKH18FK
1, PKH24FK1, PKH30FK1, PKH36FK1
are added.
•PCH24EK
1, PCH30EK1, PCH36EK1, PCH42EK1
are added.
•PLH18FK
1, PLH24FK1, PLH30FK1, PLH36FK1,
PLH42FK
1 are added.

Questions and Answers

  • C
    Christopher JohnsonAug 11, 2025
    What to do if Mitsubishi Electric PKH18FK1 Air Conditioner remote controller display does not appear despite turning POWER switch ON?
    • P
      Patricia CooperAug 11, 2025
      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, the remote controller is damaged and should be replaced. Otherwise, check for a short circuit in the transmission wire, bad contact at indoor CN40, whether CN40 is attached to a sub unit, a damaged transformer, bad contact at CN4T, a broken fuse, or if the circuit breaker is OFF. If all these points are normal, replace the indoor controller board.
  • J
    johnsondavidAug 18, 2025
    What to do if Mitsubishi Electric Air Conditioner operating display appears, but disappears soon after turning POWER switch ON?
    • R
      Robert SchmidtAug 18, 2025
      If the operating display on your Mitsubishi Electric Air Conditioner appears briefly and then disappears after turning the power switch on, it could be due to: * A short circuit in the indoor/outdoor connecting wire. * A short circuit in the transmission wire. * A short circuit in the drain sensor heater circuit. * Wrong operation of remote controller due to noise wave emitted by other appliances. Check the wiring for any shorts. Measure the resistance of the drain sensor connector CN50 1-3; a normal value should be 82". If the issue persists, turn the circuit breaker OFF and then ON again. If the remote controller remains abnormal, replace the indoor controller board.
  • K
    Kelly ValdezAug 27, 2025
    What to do if check code “E0” appears on Mitsubishi Electric PKH18FK1 when remote controller POWER switch is turned to ON?
    • B
      Brad ArcherAug 27, 2025
      If the check code “E0” appears on your Mitsubishi Electric Air Conditioner when the remote controller power switch is turned on, it indicates a signal transmission error between the indoor unit and the remote controller. To resolve this, connect a sub remote controller and turn the circuit breaker ON. If the display “centrally controlled” remains, replace the indoor controller board. If the display disappears, turn the remote controller POWER switch ON and check the remote controller and sub remote controller for malfunction.
  • S
    Sarah SchneiderSep 3, 2025
    Why does the Mitsubishi Electric PKH18FK1 remote controller display “centrally controlled” not disappear?
    • A
      alejandro35Sep 3, 2025
      The persistent "centrally controlled" display on your Mitsubishi Electric Air Conditioner remote controller may be due to: * Incorrect address setting of the remote controller or indoor controller board. * A timer adapter connected to the remote controller. * Signal transmission error between the indoor unit and remote controller. To resolve this, check the address settings of both the remote controller and the indoor controller. Also, verify the timer adapter is correctly used. If issues persist, turn another remote controller’s DIP SW17-7 ON to make it a sub controller, connect it to the unit, and turn the circuit breaker ON. If the display disappears, replace the original remote controller; if it remains, replace the indoor controller board.

Mitsubishi Electric PKH18FK1 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPKH18FK1
CategoryAir Conditioner
LanguageEnglish

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