Montpellier Dishwasher DW1064P Problems

When investing in a quality appliance, the last thing you’d expect is to run into operational challenges, especially with something as essential as a dishwasher. Owners of the Montpellier DW1064P dishwasher have voiced concerns regarding a specific ‘inadequate water supply’ fault. Here’s a breakdown of the reported problem and potential solutions.

Symptoms:

1. The discharge pump operates and drains out any remaining water for around 30 seconds at the beginning of a cycle.
2. Water flows into the machine, with the spray arms rotating for about 2 minutes.
3. The drain valve activates again, draining out the water for another 30 seconds. Afterwards, the machine locks out due to a fault.

Potential Causes and Solutions:

1. Water Supply Issues:
   • Check the water supply hose, filters, and screens to ensure no blockages.
   • An owner verified the functionality of the water inlet valve outside of the machine and found it to be in proper working condition.
2. Safety Float Switch:
   • The machine might believe it’s being flooded, causing it to engage the safety mechanism. Start by examining the safety float switch in the machine’s base.
   • Ensure the float is free from obstructions and functioning correctly. If the float is not engaging the switch and there’s continuity across the switch, it might be working as intended.
3. Pressure Sensor Issues:
   • A malfunctioning pressure sensor might make the machine believe it’s overfilling or flooding. In this model, if the safety float switch is activated during a cycle, it shows a ‘water overflow’ fault code.
   • One user couldn’t find a pressure sensor on their model but pointed out that activating the safety float switch resulted in a ‘water overflow’ fault code. This observation led to discussions on whether the problem could be related to the water inlet valve or a different water-sensing mechanism.
4. Water Counter/Flow Meter:
   • Many dishwashers employ a water counter, which includes a small water wheel with an attached magnet. This wheel is detected by a reed switch that translates its rotations into pulses. If this mechanism malfunctions, the machine might misinterpret it as a water shortage and enter fault mode.
   • Following the pipe from the inlet valve into the machine could lead to the discovery of a water counter. Owners should check the functionality of this reed switch and its connections.
5. Electrical Issues:
   • Checking the wiring and connections is essential. Some have found issues where wires were poorly routed, leading to disconnections.
   • It’s also worth noting that a faulty reed switch can still show signs of working (like intermittent beeping). Replacement is the best way to be sure.
6. PCB or Main Board Issues:
   • If all other components are working correctly, there might be an issue with the main PCB or board of the dishwasher, which would be a more expensive fix.

Conclusion:

The Montpellier DW1064P dishwasher’s ‘inadequate water supply’ issue poses a challenge due to the myriad potential causes. Before concluding that the main board is faulty, owners are advised to meticulously check all other components. When dealing with electronic or appliance repairs, always prioritize safety. If unfamiliar with the process, consulting a professional might be the best route, even if it requires waiting for the right expertise to become available.