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Old 03-07-2016, 12:03 PM   #1
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hot water delivery issue

Hi, we have a new Catalina SBX 291QBS. we went for our first trip this past weekend and had an issue getting hot water to the sink/shower etc. The system has the electric/gas water heater so we thought maybe that was an issue. we flipped the electric switch off, let set for half a day and then turned on the gas system switch. it ignited and had flame to heat the water. when you turn on the hot water faucet hot water came after a sec or so and then it disappeared followed by slightly more than room temp water.
we could not get consistent HOT water to any outlet in the camper. after reading around here it sounds like their could be a bypass valve open letting the delivery line siphon in cold water to create just warm water.

is this possible? any ideas on trouble shooting or should i just take it back to the dealer and tell them to fix it. ( i hate spending time to get there and back and wait for something if its a minor fix)

Thanks,
Mike
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Old 03-07-2016, 12:11 PM   #2
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This can be caused by 3 things; all easily checked and fixed.

1) The bypass valve in your winterization set up is set to "bypass". That valve MUST be closed to get reliable hot water.

2) The faucets are open and the handset shutoff is closed in either (or both!) the inside shower or the outside showers.

All of these allow cold water to enter the hot water pipes when a hot water tap is opened.
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Old 03-08-2016, 09:36 AM   #3
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Water Filter

It sounds like you are getting hot water, but it turns to cold. I had that problem and discovered that it was my water filter. I was using a Camico CX90 Taste Pure Water Filter that reduced the flow of water so much that not enough went through the hot water heater (I have an instant heater). When I removed the filter, problem solved. I am now looking for a recommendation for a whole house filter.
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Old 03-08-2016, 09:45 AM   #4
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Probably one or conditions listed in post#2. They cover 99% of issues like yours.
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Old 03-08-2016, 09:45 AM   #5
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I vote for the bypass valve being in the wrong configuration. We did the same thing and it took me half a day to figure out the solution.
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Old 03-08-2016, 10:19 AM   #6
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Assuming this is NOT an on demand (instant) water heater that was mentioned in post # 3, the only other SLIM possibility that hasn't been mentioned is that you actually don't have enough hot water in your tank.

This could be caused by a faulty thermostat on the 110v electric side or something wrong on the propane side that would only allow the LP burner to operate a very short time and possibly then go in to lock-out.

The only way to verify hot water in the tank is to open the pop-off valve on the side of the tank and let run a minute or so to see if the water remains hot.

BE VERY CAREFUL doing this!!!!!! The water can be SCALDING hot coming directly out of the pop-off!!!!!!
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Old 03-08-2016, 10:36 AM   #7
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Quote:
Originally Posted by Scheinin View Post
It sounds like you are getting hot water, but it turns to cold. I had that problem and discovered that it was my water filter. I was using a Camico CX90 Taste Pure Water Filter that reduced the flow of water so much that not enough went through the hot water heater (I have an instant heater). When I removed the filter, problem solved. I am now looking for a recommendation for a whole house filter.
Got mine at Home Depot, and a few extra filters.......my water fill is on back of trailer above bumper, so used a quick disconnect and a 1" spacer block.....
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Old 03-08-2016, 11:22 AM   #8
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thanks for the replies. it happens when on city water as well as with water from tank and pump running. i will dig into the bypass valve (hopefully can find it)
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Old 03-08-2016, 11:25 AM   #9
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Should be real close to water heater. .maybe behind removable panel
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Old 03-08-2016, 12:53 PM   #10
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Agree with Herk7769. After you are sure the heater tank is full, retest the electric element. It would have fried in moments if tank was being bypassed.
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