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  • July 7, 2024 at 1:56 pm #1082
    theachub_m40wgrTheAChub
    Keymaster

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      Actuation of High Pressure Switch

      Error Code       E3

      Applicable

      Models

      		 REYQ-T
      Method of Error

      Detection

      		 Detect continuity across the high pressure switch in the protection device circuit.
      Error Decision

      Conditions

      		 When part of the protection device circuit opens.

      (Reference) Operating pressure of the high pressure switch:

      „ Operating pressure: 4.0 MPa (1338 ftH2O)

      „ Resetting pressure: 3.0 MPa (1004 ftH2O)
      Supposed

      Causes

      		 „

      „

      		 Activation of high pressure switch

      Defective high pressure switch
      „ Defective control PCB (A1P)
      „ Momentary power failure
      „ Defective high pressure sensor

       Note:            ∗1. Make a comparison between voltage measured by the pressure sensor and that read by the pressure gauge.

      (The pressure sensor makes measurement of voltage at its connector block to convert it to pressure. CHECK 12 ) CHECK 1

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