Same as any hot water heater. Turn the gas valve to off.
Not if the water heater is electric
YES and No Yes if you are going to be working on the gas water heater and No if you are working on a cold water line and if you are working on a hot water line you can shut off the gas or electric to the water heater so in case your water heater drains but what I usually do is just turn the water heater's water supply valve off.
Tripped safety switch
You need to recover the R134 charge, remove the whole dashboard, then remove the a/c heater box to get to the heater core. The heater core should be accessible right next to the gas pedal. No dash removal is necessary.
Gas leak. Have this fixed ASAP!
It is possible that a car can smell like gas when the heater is turned on for a few reasons. One possible reason that this happens could be a leak in the line.
The Dodge Caravan heater was invented in 1984 by the Dodge and Mopar companies. Since it's creation it has evolved into a much bigger and popular van.
If it is the heater fan, there is a short in the wiring. If you mean the cooling fan on the radiator, it is normal with some vehicles.
There must be a gas leak. Contact your gas supplier IMMEDIATELY, if the smell is in a house. If it is in a car, have your mechanic check for a leak.
If someone needs information about replacing a caravan heater, can be found on the Camping and Caravnning Club website, a website dedicated to caravans.
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