Fisher & Paykel 517735 service manual Smartdrive Problems, If Smartdrive Appears To Have No Power

6.0SMARTDRIVE PROBLEMS

6.1If Smartdrive Appears To Have No Power

If the module appears to be dead / no power then check the following:-

•Is the external mains plug switched on and live?

•Are all plugs connected into the Motor Controller?

•Phase 4 Only. Check that the product is not "asleep". There is a mode in the motor controller where it can shut down in the event of a transient on the mains. This can be caused by the thermal trip on the pump, i.e. pump block. If this occurs the module will not restart unless the power is turned off at the wall for at least 90 seconds. The module is not damaged and there is no need to replace the motor controller.

•Phase 5 Only. The pump is used as part of the power supply if it is not connected Smartdrive will appear dead. Check the pump resistance is 33 ohms. If the pump is open circuit, has the thermal cut out tripped? This should reset within 15 minutes after tripping once the pump has cooled down. If the thermal cut out has tripped, check for a blocked pump.

•Check the resistance from Phase & Neutral to Earth. This will identify if either the motor wiring harness or the lid switch harness is shorting to the wrapper.

•Check that the resistance of each of the water valves is 15 ohms (phase 1-4), 64 ohms (Phase 5).

•Phase 2-4 Only. Check the 15v supply is 11v min, 17v max.

•Phase 1 Only. If fitted with an original Phase 1 Motor Controller with a fuse, see WM51.

Replace the Motor Controller, if none of the above faults are found. NB. Ensure product is empty of water when pressure tube is reconnected. If the product is phase 1 to 4, ensure that the console area is dried out before fitting replacement motor controller. Always check the pump resistance before fitting a new Motor Controller.

6.2If Smartdrive Powers Off mid cycle

•If there is a power interruption while Smartdrive is performing a wash cycle, Smartdrive will continue when power returns. There are two exceptions.

•Phase 4 Only. Check that the product is not "asleep". There is a mode in the motor controller where it can shut down in the event of a transient on the mains. This can be caused by the thermal trip on the pump, i.e. pump block. If this occurs the module will not restart unless the power is turned off at the wall for at least 90 seconds. The module is not damaged and there is no need to replace the motor controller.

•Phase 5 Only. The pump is used as part of the power supply, if the thermal trip goes on the pump the product will power off and the cycle will not restart. The thermal cut-out will normally only trip on the pump if there is a pump block.

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