Aqua Hot frequent pump failure

roger berke parts@rvhydronicheaterrepair.com is one of the most knowledgeable people when it comes to aqua hot and probably will be able to help you

It sounds like your Aqua-Hot is of the age that it probably had the square GRI pumps that proved to be very unreliable. Lots of discussion about this issue on the Tiffin Owners Forum. We had all four of our original pumps die over the course of about 2 years. Some out of warranty owners have gotten a reduced price for the upgrade kits to the newest pumps.

older_fossil wrote:
It sounds like your Aqua-Hot is of the age that it probably had the square GRI pumps that proved to be very unreliable. Lots of discussion about this issue on the Tiffin Owners Forum. We had all four of our original pumps die over the course of about 2 years. Some out of warranty owners have gotten a reduced price for the upgrade kits to the newest pumps.

Not just unreliable but really expensive too. Vehicle systems has these pumps as proprietary items and GRI won't give you any help with them.
Very frustrating!!

1. Aqua Hot is aware of failure in the original pumps. I know this because Aqua Hot has a Kit now that you use to replace the failed pumps. It is a kit that will work for all Aqua Hots for the past 20 years.
2. I have replaced failed pumps on units from 2/3year old and back before they had the new style pump
3. IF you are having multiple failures, I would disassemble the ones that failed and look at them. IF corrosion in inside, I woul;d drain the Glycol and flush and install new Glycol. Also, MIXING the 2 different brands of Glycol will cause the fluid to corrode the pumps. You NEVER mix the 2 different brands of Glycol. Since you have multiple failures, You need to drain/ flush and refill. Doug