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  • July 7, 2024 at 1:40 pm #1033
    theachub_m40wgrTheAChub
    Keymaster

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      Transmission Abnormality between Indoor Unit PCB and Fan PCB

      Error Code       C1

      Applicable

      Models

      		 FXMQ-PB
      Method of Error

      Detection

      		 Check the condition of transmission between indoor unit PCB (A1P) and fan PCB (A2P) using computer.
      Error Decision

      Conditions

      		 When normal transmission is not conducted for certain duration.
      Supposed

      Causes

      		 „

      „

      		 Connection defective the connecter between indoor unit PCB (A1P) and fan PCB (A2P)

      Defective indoor unit PCB (A1P)
      „ Defective fan PCB (A2P)
      „ External factor, such as instantaneous blackout

      blackout).

       Note:  ∗1.Pull out and insert the connecter once and check it is absolutely connected.

      ∗2.Method to check transmission part of indoor unit PCB.

      • Turn OFF the power and remove the connecter X70A of indoor unit PCB (A1P).
      • Short circuit X70A.
      • After turning ON the power, check below numbers under field setting from remote controller. (Confirmation: Second code No. at the condition of first code No. 21 on mode No. 41)

      ↓

      Determination01: Normal

      Other than 01: Transmission error on indoor unit PCB ∗ After confirmation, turn OFF the power, take off the short circuit and connect X70A back to original condition.

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