I've never heard of a 16 amp fuse. -I guess it depends where you are. In North America, 15, 20 and 30 amp fuses are common, 40 are also used less commonly. A typical north American water heater uses 2 x 30 amp fuses or breakers.
Please write in with detail of WHERE you are in questions like this.
Fuses can last for 10 years or more because fuses don't really wear out unless perhaps they are run continuously right at the edge of blowing. The constant heat of near-high amperage (which is what blows the fuse anyway) will eventually cause it to trip at a lower amperage than when it was new. Water will corrode a fuse and cause it to blow and low voltage on a circuit feeding a motor will drive the amps up, causing a fuse to blow when it would have been ok at normal voltage (12.6-13.6 dcv). And corrosion on the fuse blades inhibits voltage.
First check what's actually serviced by that fuse, maybe you've added something that wasn't there from the beginning, pushing the draw over the allowable limit. If that still looks OK, start by disconnecting the stuff hooked up to that fuse one by one, see if that can narrow things down. If that doesn't show anything, then you have to start inspecting the wiring itself for damages.
What size is the wire? AWG 10, 600V is rated for 30 amps. Any AWG less than 6 would also be ok for a 30 amp circuit....
On the inside of the heater cover, and within the documentation shipped with the heater, there should be a diagram of the control circuit. These heaters will not operate if the pump is off (pressure switch), if the "fireman" switch is off (a switch generally inside the pump timer that disables the heater about 15 minutes prior to turning off the pump), nor if both of two additional high temperature limit switches are activated (models will vary). The fact that the pilot is lit indicates that the pilot generator is OK. If you can turn the burner on by shorting the control circuit manually (using a jumper wire) the problem is in on of the safety limit switches, or in the thermostat itself. Good Hunting! http://www.poolcenter.com/parts_heaters_laars_xe_pg1.htm A pilot generator may have enough power to operate the pilot ,however not be sufficient to operate the main valve as well, this is quite common. The way I test a millivolt system of any type is I have a AA battery holder from RadioShack with a positive and negative lead, I disconnect the pilot generators 2 leads and replace them with the AA batterys. The battery is 1.5v it wont hurt though, but if the gas valve wont open and you do get voltage to the gas valve terminals for the main valve, the valve is either bad or stuck, an amp draw will tell you if its trying to work or shorted perhaps if excessive. There are a limit and on off and thermostat on this unit I believe as well .
it would be ok in a circuit which didn't need a light bulb.
There might be a bad fuse causing the heater to not work. Check the fuses if they are all ok you may have a bad blower motor. when you turn the heater on and no air is blowing then it is your blower motor.
Ok, I got the answer to this question. It seems that there is not a heater control valve in the heater hose line.
Raise the hood find the heater motor tap it with a hammer. It should run.
Due to possible liability you should never convert a water heater unless the manufacturer specifically has instructions that state that it is ok to do so.
It is ok to use a fuse with a higher amperage rating and not ok to use a fuse with a smaller amperage rating why?
check the a/c clutch if wobbles it will short out system Another solution is check the owner's manual for the fuse box layout. It could be the AC fuse, or even the cigarette lighter fuse.
the hot water from the engine does not enter the heater coil placed under the dust board of the car because the water valve controlling it is not being activated. Possible cause no supply of 12 volts or the coil of the valve is already burnt out. Have it check by a professional car aircon technician. But first look up for the fuse of said control possibly you've got only a blown fuse. Try to check the fuse using visual inspection and multitester. fuses are ok
Blown fuse.
I have a 2002 Chevy SilerRado 1500 Pick up Truck, 2 wheel drive. My broblem is with the heater not coming on. I checked the fuse Box on the drivers side of the dash board label HTR/COOLING. The fuse was ok. I would like to know how to locate the Heater Core and replace it if possible. I haven't checked the thermostat. thanks in advance
yes its ok to run dyed kerosene in your heater i have been doing it for at least 2 years now with no problems.
If you know the fan motor is good but it will not work, first check the fuse. If the fuse is good, then it is either the fan motor switch or the resistor pack that is defective.
if it is out check fuse if fuse is ok you will need to replace it.