Samsung MH026FPEA Training Manual

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Samsung Electronics102NoNoYesYesYesYesYesTroubleshootingYesYesNoNoNoNoNo8-3-9 When the compressor does not operate1. Checklist :1) Is the Comp. under the operating conditions? (cooling operating of A, B(C) room)2) Is the power voltage normal? (the rating voltage ±10% range)3) Is the connector connection of Comp. good?4) The Comp. is operated on and off in accordance with the operating conditions of indoor unit of A(B, C) room.2. Troubleshooting procedure✳ Comp. A (B) operating conditions(1) Comp. A : Comp. on /off control in accordance with the A room during the heating and cooling indoor unit operation(2) Comp. B : Comp. on /off control in accordance with the B(C) room during the heating and cooling indoor unit operation✳ Comp. A(B) power measuring terminal(1) Comp. A measuring ; RY73 (4) ↔ RY72 (4)(2) Comp. B measuring ; RY71 (4) ↔ RY72 (4)(3) Power input ; RY72 (3) ↔ RY73(3)*Refer to the power measuring terminalREDBLKRY73RY71BLKREDWHTRY72(3) (4)(3) (4)(3) (4)Keep Comp. offNormalDefect of Comp. and running condenser→ ReplaceDefect of RY72, 73 (Comp. B) andRY71(Comp. A) contact and coil → ReplaceDefect of IC06 output→ ReplaceDefect of IC04 (micom)→ ReplaceNormal (Comp. off)Apply the outdoor power and operate the indoor unit A(B,C,D)in the cooling mode.Normal(Comp. off)Has 3 minutes passed Comp. after the power initial and Comp.on/offIs Comp. on?Is the voltage of pin #14, 13(15) at low(DC 0.7V)?Is the voltage of pin #50, 51(52) of IC04 (micom) athigh (DC 5V)?Is Comp. under the operating condition?Is the voltage (the rating voltage ±10% range) shown across theterminal of Comp. power applied?Is the Comp. under the operating condition?