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Anonymous Posted on May 24, 2014

HOW DO YOU JUMP THE TH TERMINALS? - Hayward 250kbtu Ng Pool Heater - Inground

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4answers

How do I replace the starter?

The fact that it starts when you jump it makes me believe it is not the started. I think a dirty, loose, or bad battery cable connection -- or it could be a bad battery cable itself.
0helpful
1answer

Jump th terminals

???

What do you mean jump the terminals?

Not a good idea to ever jump anything, unless your are only troubleshooting!!!!

Especially on a natural gas fired heater! : -o
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1answer

Help... I have a 92 350 chevy truck that will not start. I have replace the ECM, coil, ignition mod., the fuel pump relay and the fuel pump. When i turn th Ignition switch on th fuel pump doesnt come on....

You said you jumped the wires for the pump? Was that at the pump relay?
If you have a voltmeter or test light, keep the jumper wire in place and check for voltage at the fuel tank connector. The pump wire will be gray. With relay out and jumpered there, you should have battery voltage at the fuel tank connector. The key doesn't even have to be on, cause the relay has voltage to it at all times. If you jumpered it right (terminals 87 and 30 on the relay), and no voltage at the tank connector, you have a broken fuel wire somewhere between the relay and the fuel tank.
If you do have voltage at the tank, but the pump still won't work, only two possibilities, a bad pump or the ground for the pump is lost. Check the pump ground first.
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1answer

Raypak problem, Pilot is lit, can jump TH to TH to lite, goes out when jumper is removed.

check how many millivolts the pilot is generating. if pilot stay lit and burners wont fire u have a problem with one of the safties, lose wire connection, tstat control
1helpful
2answers

Hayward H 300 series pool heater for an inground pool. Pilot light is lit. Filter is clean. If I jump the terminals the heater will go on. If not the heater will not start.

I have an H300 Millivolt Hayward heater. It will start and run for about 1 minute then shuts off along with the pilot going out. I've tried cleaning all the terminals and running all new wiring but same result. I've also jumped out the TH to TH terminals leaving the jumper in place and it still shuts down after 1 minute. Any idea what that could be ?
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1answer
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1answer

Pilot lamp is lit but the Cozy Thermostat will not operate the furnace valve to turn on. Is there a test to check whether it is the thermostat or valve inop?

pull the 2 wires off of stat and twist together if unit come on its the stat if not go to the gas valve and jump out to see if the valve will come, the 2 th terminals.
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1answer

My 2004 mini cooper will not take a jump. The car was running fine. I ran into a store and 3 minutes later attempted to start it and NOTHING. So I attempted to jump it, Mini will not take a jump. Any idea...

If you are trying to jump from the factory "Jump start" terminals and nothing is working, You should suspect your cable to battery connections. Remove the battery cables from the battery and clean the battery posts and the cable terminals. (Auto parts stores sell a very inexpensive tool to do this) Reinstall and tighten the terminals.
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1answer

Hayward H-Series 200k BTU Millivolt Heater - Natural Gas burners will not ignite. Jumping th terminals /burners will ignite

If the (th) terminals means the thermostat terminals then you have a bad thermostat and it needs to be replaced.
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1answer

I have a minimax 250 i can light the pilot but the main burner will not light. i jump the th to th/pp and the pilot goes out.

are you sure your jumping th and th/pp? the labeling on valve is a little deceptive.should use 1st and 3rd terminal on gas valve. if your using correct terminals try same thing with thermostat wires disconnected from gas valve. this will isolate valve from all controls and safties.if it fires valve is good and need to look in thermostat loop for problems. hope this helps
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