Fisher & Paykel ecosmart GWL11, Service Manual

Page: 11 / 41

517766 March 2003
- 11 -
14.4 Pump
The pump now uses a vortex impellor, which reduces the operating sound levels at the
end of the drain cycle. The new pump is a dedicated 110V 60Hz Selni pump. The way the
pump is controlled has changed. During the drain cycle the pump is stopped and started
quickly every 10 / 15 seconds.
The pulsing on and off of the drain pump only occurs when the basket is afloated.
Changing the factory setting.
Pulsing can be turned off if a higher head height is required (7 feet max) , however the
possibility of pump blockage and Suds lock increases, which inturn affects the required
head height.
Enter “SIZE SETTING” mode (TEMP UP and POWER) this should be familiar when
changing modules and or displays.
The REGULAR cycle button toggles between having this feature disabled or enabled.
The REG LED shows the current status, when the LED is on in this mode the pulsing is
disabled. No other settings will be affected by this change and the setting will be saved in
eeprom. Power off in the same manner as with size setting to retain the setting.
If dual pumps were to be fitted, this feature should be used where the intermediate head
height is above 5 feet. The pulsing function is most effective in standard head height
situations (up to 6 feet).
Note:
If the pump has blocked/jammed and the thermal overload has gone open circuit, just
remove the blockage from the pump. The module and the pump should still be okay. If
the pump windings are
water damaged , the pump will quickly overheat and cut off again.
The pump must be replaced in this case. (If the pump shorted to earth, it is possible that
the module could short out on series 10 machines). Series 11 should not have this
problem. The pump is not powered through the motor controller as with the phase 5
products. Series 11 phase 6 machines do not utilise the pump to dump energy. This
change also reduces the potential for failure.
It is important to check the pump windings thoroughly for water damage. It is possible for
the resistance of a water-damaged pump to be normal, however the inductance of the
pump can change causing it to overheat and cut out. There are new fault codes in the
system that now relate to the pump circuit and it’s extended function.