No. Part name | Procedure |
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T Control board | 1) Disconnect lead wires and connectors connected |
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assembly | from the control board assembly to other parts. | CN301 | CN703 | CN500 | CN701 |
| 1. Lead wires | ||||
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| • Connection with terminal block : |
| CN602 | CN601 |
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| 3 wires (Black, White, Orange) |
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| • Connection with compressor : | CN300 |
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| CN600 | CN603 |
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| Remove the connector (3P). |
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| • Connection with reactor : |
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| Remove the relay connectors from P07, 08 |
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| (2P, White) and P12, 13 (2P, Yellow). |
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| 2. Connectors | CN300, CN301 and CN701, etc. | |||
| CN300 : Outdoor fan (3P, White) | ||||
| at the control board assembly | ||||
| CN301 : Outdoor fan position detection | ||||
| side are connectors with locks. | ||||
| (5P, White) | ||||
| Therefore, remove the connector | ||||
| CN701 : 4 valve (3P, Yellow) | ||||
| while pushing the part indicated | ||||
| CN600 : TE sensor (2P, White) | by an arrow. |
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| CN601 : TD sensor (3P, White) |
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| CN603 : TS sensor (3P, White) |
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| CN602 : TO sensor (2P, White) |
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| CN500 : Case thermo. (2P, White) |
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| CN703 : Pulse modulating valve (6P, White) |
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2) Remove the control board assembly from P.C. board base.
1. Main control board assembly side
• Remove two claws of P.C. board base, and remove upward the heat sink with hands.
•Remove three screws fixing the heat sink and main control board assembly side, and
replace the board with a new one | P.C. board base |
| P.C. board |
When mounting a new board, check that the board is correctly set in the groove of base holder of P.C. board base.
U Rear cabinet 1) | Perform work of item 1 of Q, and R S. |
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2) | Remove fixed screws fixing to the bottom plate. | Reactor |
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| (ST1TØ4 x 10l 3 pcs.) |
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3) Remove fixed screws fixing to the heat exchanger. (ST1TØ4 x 10l 2 pcs.)
4) Remove fixed screw fixing to the valve mounting plate. (ST1TØ4 x 10l 1 pc.)
