8. TROUBLE SHOOTING GUIDE
NOTES
1. When replace the P.C.B. ASS’Y do not scratch the surface of the P.C.B. ASS’Y.
2. Disconnect the power cord from the electric outlet.
CONCERNING WATER SUPPLY
PROBLEM
WATER IS
NOT SUP-
PLIED.
CHECK POINT
Do you open the water
tap?
YES
Is the filter of the water inlet valve clogged with dirt?
NO
Is the water pressure sufficient?
(0.3~8 kgf/cm2)
YES
| CAUSE |
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| SOLUTION |
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| NO |
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| Open the water tap. | |
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| YES |
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| Clean the filter. | |
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| NO |
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| Increase the water pres- | |||
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| NOTE : Open the water tap fully and measure |
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| the flow rate. |
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| Flow | 11.5 | 15.0 | 18.0 | 20.3 | 24.1 | 27.4 | |
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| Water pressure | 0.3 | 0.4 | 0.5 | 0.6 | 0.8 | 1.0 | |
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From the upper results, you know that the flow rate more than 11.5l/min. is essential for water supply.
Does the water inlet valve make operating sound?
YES
Is the connector or the terminal connected properly?
YES
NO
NO
Water inlet valve is defective.
Improper connection of the connector or the ter- minal.
Change water inlet valve.
Connect the connector or 
the terminal properly.
Is the output voltage of the P.C.B normal?
YES
NO | P.C.B AS is defective. | Change the P.C.B AS. |
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Lead wire is defective. |
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| Change the lead wires. |
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TROUBLE SHOOTING 25
