[
VII
Troubleshooting ]
- 26 -
HWE18200
GB
2) FCV operation
(4) Pressure sensor
Pressure sensor (inner water) PS1
Pressure sensor (outlet water) PS2
1) Check that the pressure sensor is connected.
2) Check the pressure sensor wiring for breakage.
(5) Drain pump
(6) Drain float switch (CN4F)
Disconnect the connector, and measure the resistance between terminals with a volt meter.
(a)
Close
(b)
Open
(c)
Fully open valve (85 pulses)
(d)
Fully close valve (770 pulses)
(e)
No. of pulses
(f)
Valve opening degree
1. Check if the drain float switch works properly.
2. Check if the drain pump works and drains water properly in cooling operation.
3. If no water drains, confirm that the check code 2502 will not be displayed 10 minutes after the
operation starts.
Note: The drain pump for this model is driven by the internal DC motor of controller board, so it is not
possible to measure the resistance between the terminals.
Normal
Red–Black: Input 13V DC The fan starts to rotate.
Purple–Black: Abnormal (check code 2502) if it outputs 0–13 V square wave (5 pulses/rotation), and
the number of rotaion is not normal.
(A)
Moving part
(B)
Switch
(C)
Magnet
Position of the moving part
Normal
Abnormal
Up
Short
(any position but short)
Down
Open
(any position but open)
(b)
(a)
(d)
(f)
(e)
(c)
Red
Purple
Black
1
2
3
1
2
3
4
(A)
(A)
(B)
(C)
HWE18200.book 26 ページ ２０１９年５月８日 水曜日 午前１０時５２分
Summary of Contents for CITY MULTI PEFY-W100VMA-A
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