| 1. Disconnect a wire from the - plug of the rechargeable battery. |
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2. Disconnect a block 1 with wires from the valve 2 (3 – an ohmmeter). |
| 3. Connect an ohmmeter to contacts of the valve and measure resistance, it has to be equal 14–20 Ohms. Its lower limit corresponds to resistance of the cold valve, top – to resistance at a working temperature. |
| 4. If resistance of the valve differs from specified, replace the valve. |
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