Elddis Water Pump Problems

Elddis caravans are a popular choice among caravan enthusiasts. Like any complex system, the water pumps in these vehicles can sometimes exhibit peculiar behaviors, causing inconvenience to users. Let’s delve into one such specific issue observed in the Elddis Crusader model and possible solutions.

Problem Statement:

Owners of the Elddis Crusader with an inboard water tank have reported a persistent problem: the water pump doesn’t cease operation even after turning off the tap when drawing water from the inboard tank. Conversely, when switched to run from the Aquaroll, the pump halts as expected. Given that it operates correctly with the Aquaroll, it’s plausible to assume the micro switches linked to the taps function properly.

Potential Causes and Solutions:

1. Pressure Switch or Micro Switches:
   • A query often raised is whether the issue arises due to micro switches or a pressure switch. If it’s the latter, the onboard tank might have a drain that’s malfunctioning.
   • Solution: Ensure the drain tap is fully closed. Check for any abnormalities.
2. Air in the Suction Line or Blockage:
   • Air trapped in the suction line or a partial obstruction could be responsible for the anomaly.
   • Solution: Give the suction line a gentle shake or try disconnecting the feed into the pump and blow through it to clear any potential obstructions.
3. Pressure Buildup:
   • If the system is regulated by a pressure switch, inadequate pressure buildup might be hindering the switch activation.
   • Solution: Assess the system’s pressure dynamics and check for any inconsistencies.
4. Delivery Line Issues:
   • The problem might lie within the delivery line from the onboard tank, especially since the Aquaroll system works flawlessly. Another possibility is a malfunctioning non-return valve.
   • Solution: Review the pickup pipe in the Aquaroll and inspect for anomalies.
5. Whale System Calibration:
   • Some Elddis models come equipped with a Whale system, which might need recalibration if the water pump continues to run after the tap is off.
   • Solution: The recalibration process is detailed in the caravan manual, typically involving steps with the LED indicators and water controls.
6. Blockage in the Solenoid Unit:
   • A possible cause pinpointed involves a blockage in the solenoid unit near the inboard tank.
   • Solution: Upon inspection of the Whale schematic, it was found that cleaning the fine gauze filter in the ‘water in’ feed through the solenoid unit can alleviate the problem. Users should ensure they note the filter’s orientation during removal to facilitate its proper reinsertion post-cleaning.

Conclusion:

Addressing water pump issues in the Elddis Crusader requires a combination of understanding the system’s nuances and implementing targeted interventions. The strategies detailed above can significantly aid in troubleshooting and resolving these problems. As always, if problems persist or users are unsure about any steps, consulting with a specialist or the manufacturer is advisable.