Truma Ultraflow Water Pump Problems

Caravans offer the freedom to explore, but like all vehicles, they can experience technical hiccups. One issue caravan users have reported revolves around the Truma Ultraflow water pump. Let’s understand the problem and discuss potential solutions.

1. The Problem

Regular use of the caravan during the summer can lead to a sudden drop in water pressure. Users have reported that while the pump runs, the pressure starts off strong but dwindles until there’s barely a trickle. Additionally, the pump may feel warm, indicating it’s possibly overworking or malfunctioning.

2. Investigative Steps

• Check Battery Voltage: A low battery voltage can be a potential cause for the pump’s inefficiency. However, if other 12-volt equipment operates without hitches and the battery meter reads a stable voltage (like 13.5 volts), then the battery isn’t the culprit.
• Water Level and Placement: Ensure that the pump is adequately submerged. Sometimes, the pipe can curl up, positioning the pump above the waterline, which would hinder its efficiency.
• Gauze Filter at Tap Ends: Taps usually have a gauze filter at their ends, which can gather debris and impede water flow. The filter on the cold tap, especially if it’s far from the water inlet, can often collect more sediment. While checking, it’s crucial to note if the problem persists even at the shower head, which generally lacks such a filter.

3. Possible Solutions

• Inspect and Clean the Pressure Switch: The pressure switch plays a pivotal role in maintaining adequate water flow. Draining the water system and removing this switch for inspection can sometimes reveal the root of the issue. Inside, you’ll find a coil spring and a rubber diaphragm. Ensure the diaphragm isn’t punctured, as any damage can result in a pressure drop. If it’s defective, it’s non-replaceable, necessitating a new pressure switch. Ensure correct installation with the directional arrow indicating water flow.
• Check the Filter: As one user discovered, the filter can often be the culprit. A blocked filter can drastically reduce water flow. Consider running the system without the filter temporarily to ascertain if it’s the cause. If the problem resolves, you’ve found your problem.
• Consider Eliminating the Filter: Given the potential hassle of blocked filters and the possibility of residual water freezing within them during winter, causing damage, some suggest doing away with the filter entirely. It’s an individual choice but one worth considering for more effortless water flow and reduced winter-related issues.

Conclusion

The Truma Ultraflow water pump is an essential component of many caravans, ensuring a consistent water supply. While problems can arise, a systematic approach to troubleshooting can often lead to a quick resolution. Whether it’s cleaning the pressure switch or reevaluating the necessity of the filter, users have several tools at their disposal to ensure their caravanning adventures remain hassle-free.