Fisher & Paykel 517735 service manual Siphoning, Radio Frequency Interference RFI, Earth Leakage

6.8Siphoning

Typically this occurs when the Standpipe height is too low. The minimum is 850mm from the floor, this is 90mm ABOVE the drain hose outlet on Smartdrive. With a very low standpipe and a very high water level this could result in water pouring down the standpipe prior to Smartdrive completing fill and resulting in no water in bowl during agitate. This could result in fault code 36 or 38.

If the drain hose is pushed too far into the standpipe or drain, Smartdrive will siphon during rinse, which could result in a ‘No Taps’ user warning.

Siphoning can result from a restricted drain hose or partial pump block.

The Motor Controller or Display will not be faulty.

6.9Radio Frequency Interference (RFI)

Smartdrive complies with international standard CISPR 14.2. Check the earthing of the wrapper. Otherwise if the user is having poor TV reception it is most likely to be that the TV aerial or reception is inadequate. Recommend an improved aerial or an amplifier for TV aerial.

6.10Earth Leakage

•If the resistance from earth to Phase/Neutral is low, below 1M ohm, check the following:-

•Is the main motor harness shorting to earth?

•Phase 3 to 5. Is the lid switch harness shorting to the wrapper?

•Are there any other connections to earth?

•If the earth leakage resistance is OK and the earth leakage breaker trips check that this breaker is not of an older type. Earth leakage protection devices are designed to trip when the earth leakage current is 15-30mA. The older designs tripped in less than 30ms, while more modern designs are up to 100ms. Consequently older devices are more susceptible to false tripping than modern ones. Smartdrive complies with all the international requirements regarding earth leakage.

6.11It Appears Smartdrive is doing nothing

The user may have stopped Smartdrive before detecting a user warning or fault.

•Check that the lid switch is working.

•Check that the water is connected and taps on.

•If Delay start is ON then the ‘Start/Pause’ button will do nothing.

•If Smartdrive is bowl checking continuously: Check for oversudsing or a foreign object preventing the clutch from re-engaging.

•If Auto Water Level is being used: NB. Smartdrive resenses Auto Water Level every time the lid is opened.

•If the water valves are pulsing: This is an indication that Smartdrive is attempting to restart but is identifying a fault condition. Go to next step.

•Turn Restart OFF and let Smartdrive diagnose the fault. See section 8.4.

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