Service Manual Damcos LPU: Troubleshooting Guide LPU
SM 8000-100-01 Ed 04 February 2017
52
Solenoid valve not working
Action: • Check that solenoid valve is energized (230 V on terminals “N” and “SV”).
• If coil is energized, but solenoid valve does not work, the resistance of the coil is measured (LPU-
D). The coil must have a resistance of approximate 520
for LPU-D. Due to a diode bridge resis-
tance cannot be measured for LPU-S coil. Another way to check the coil is to loosen it and try to
lift the coil when energized. If coil does not work, it is replaced.
• If coil works, the valve is to be replaced. See “Replace Solenoid Valve in LPU-D” on page 107.
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