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Toshiba MCY-MHP0404HT-C - User Manual

Toshiba MCY-MHP0404HT-C
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FILE NO. A10-1405
SERVICE MANUAL
AIR-CONDITIONER (MULTI TYPE)
O
UTDOOR UNIT
Model name:
This service manual provides relevant explanations about new outdoor unit.
Please refer to the following service manuals for each indoor units.
Produces in Japan, May.2014 IDEA
MCY-MHP0404HT-C/0504HT-C/0604HT-C
MCY-MHP0404HT(J)-E/0504HT(J)-E/0604HT(J)-E
MCY-MHP0404HT-TR/0504HT-TR/0604HT-TR
MCY-MHP0404HT(J)/0504HT(J)/0604HT(J)
MCY-MHP0404HT-A/0504HT-A/0604HT-A
MCY-MHP0404HT-SG/0504HT-SG/0604HT-SG
MCY-MHP0404HT-ID/0504HT-ID/0604HT-ID
<4-way Cassette Type>
(MMU-AP****H) A08-004 A08-004
(MMU-AP****H-C) A08-004 A11-008
(MMU-AP***4HP*) (Made in Thailand model) SVM-13011 SVM-13011
(MMU-AP***4HY-C) (Made in China model) A10-1402 A10-1402
<2-way Cassette Type>
(MMU-AP****WH*) A10-007 A10-007
(MMU-AP****WH-C) A10-007 A11-008
<Concealed Duct Standard Type>
(MMD-AP***4BH-C) A10-033 A11-008
(MMD-AP***6BH*) SVM-13087 SVM-13087
<Slim Duct Type>
(MMD-AP***4SPH*) A12-005 A12-005
(MMD-AP***4S(P)H-C) A12-005 A11-008
(MMD-AP***6M(P)HY-C) (Made in China model) A10-1403 A10-1403
<High-wall Type>
(MMK-AP***4MH*) (Made in Thailand model) SVM-09059 SVM-09059
(MMK-AP***3H*) (Made in Thailand model) A10-034 A10-034
<Console Type>
(MML-AP****NH*) (Made in Thailand model) SVM-11036 SVM-11036
<Ceiling Type>
(MMC-AP***7HP*) (Made in Thailand model) SVM-13085 SVM-13085
<Other indoor units>
(MM*-AP*****H*) A10-033 A10-033
(MM*-AP*****H-C) (Made in Japan model) A10-033 A11-008
(Made in China model) SVMA-07010 SVMA-07010
Service contents Service parts

Table of Contents

Questions and Answers

  • T
    Tony NashAug 2, 2025
    What to do if my Toshiba MCY-MHP0404HT-C Air Conditioner remote is not working and a check code appears on the outdoor unit?
    • P
      phillipsbrianAug 2, 2025
      If your indoor remote controller isn't working and a check code is displayed on the outdoor unit's interface P.C. board, it could be due to a few reasons. First, check that the line addresses and indoor addresses of all the connected indoor units are set up correctly. If not, set up addresses. Also, ensure that the indoor unit power is turned on (in the order: indoor, then outdoor). Verify that the indoor/outdoor communication line is correctly connected to the U1/U2 terminal of the outdoor unit. If address setup was performed while multiple refrigerant lines were connected, correct the wiring.
  • R
    Roger MasonAug 16, 2025
    Why is my Toshiba Air Conditioner showing fewer connected units than it should?
    • J
      Joshua BrooksAug 16, 2025
      If, after address setup, your Toshiba Air Conditioner displays a lower number of connected units than expected, it could be due to miswiring or unconnected communication lines between indoor units. To resolve this, modify the wiring, set up the addresses again, and then check the number of connected indoor units. Also, verify that the indoor remote controller is properly connected with a wire. If the issue persists, use the main indoor remote controller connected to a group to start a test operation, specify the unit that is not operating (the unit not connected to the group), and then check the wiring.
  • D
    Deborah KingAug 25, 2025
    How to fix a check code displayed on my Toshiba Air Conditioner remote?
    • B
      Brian HarperAug 25, 2025
      When a check code appears on the remote controller, it could be due to several reasons. One possibility is that the outdoor unit's power is off; ensure it is turned on. Another common cause is an address setup error, such as undefined or duplicated addresses. In this case, you should set up the address again. It could also be caused by exceeding the number or capacity of connected indoor units, so adjust accordingly. Check and correct disconnection of the indoor / outdoor communication line or check for the influence of communication noise. Duplication of outdoor line addresses can also cause the issue, so modify the line address setup of the outdoor unit between lines.
  • O
    olewisNov 8, 2025
    What to do if my Toshiba MCY-MHP0404HT-C indoor remote is not working, but there is no check code on the outdoor unit?
    • A
      Angel SmithNov 8, 2025
      If your Toshiba Air Conditioner indoor remote isn't working, but there's no check code on the outdoor unit, it could be due to several reasons. First, ensure that the communication line is connected between the indoor and outdoor units. If not, modify the wiring. Also, check that the line address and indoor address are set for the unit that is not responding to the indoor remote controller; if not, set up the address. If you're using indoor group control, make sure the power to the outdoor unit of the group is turned on. If it's set to individual control, ensure the group address is set to “0”. Finally, confirm that the indoor remote controller is properly wired. If 220 V is incorrectly applied to the indoor remote controller terminal, the remote controller communication circuit fails, so ...

Toshiba MCY-MHP0404HT-C Specifications

General IconGeneral
BrandToshiba
ModelMCY-MHP0404HT-C
CategoryAir Conditioner
LanguageEnglish

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