Freezing weather and no hot water
We are pretty new RVr's. In northern Arkansas and it has been pretty cold. We unhooked water hose, sewer hose and are running off tanks. Keeping RV thermostat no lower than 70 degrees at all times. Wa...
Forum Discussion
On my coach last winter when it hit 11 out one of the cold water lines froze,, I still had hot water all over but no cold except in the kitchen.
(Kitchen and water pump on same side).
IF the water heater was full of water, and operating, when the flow stopped there are two possible issues.
ONE frozen line,, PEX freezes and thaws nicely and usually without damage, (Elbows and fittings not so well but PEX can take it:
"Frozen" Check valve (NOTE quotes) Many water heaters have a check valve on the outlet (Some on the inlet as well) and from time to time in the due course o use these stick closed due to mineral build up. IF you have a single valve bypass system you for sure have such a check valve, if you have a 2 or 3 valve you may have such a valve.
If that is the problem and you have
Single valve system: Replace check valve with quarter turn valve or GUT it and add a quarter turn BETWEEN the water heater and the first T fitting.
2 or 3 valve system, GUT IT and forget it.
(Kitchen and water pump on same side).
IF the water heater was full of water, and operating, when the flow stopped there are two possible issues.
ONE frozen line,, PEX freezes and thaws nicely and usually without damage, (Elbows and fittings not so well but PEX can take it:
"Frozen" Check valve (NOTE quotes) Many water heaters have a check valve on the outlet (Some on the inlet as well) and from time to time in the due course o use these stick closed due to mineral build up. IF you have a single valve bypass system you for sure have such a check valve, if you have a 2 or 3 valve you may have such a valve.
If that is the problem and you have
Single valve system: Replace check valve with quarter turn valve or GUT it and add a quarter turn BETWEEN the water heater and the first T fitting.
2 or 3 valve system, GUT IT and forget it.
