Engine heat loop from AquaHot

[cmillsap]

(01-02-2017 14:28)Jusfine Wrote:  Hi Group,
I have 97XL Royale and seem that I can't pre heat engine block from the exchanger switch on the dash. It lights up when pressed, but after hours being on the block still isn't warm at all.

I have no idea if a pump is used to move coolant thru block, where the pump is located, or if there is a fuse or breaker somewhere.
It has worked up till 3 weeks ago.

Thanks for your help
Jonathan Fine
1997 Royale XL # 201

Do you have a Wabasto or AquaHot? Is it running ok but not producing hot water/coolant going to the engine? The circulation pump should be internal to the unit. Did someone turn off the valve on the block heater hose loop near the engine?