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Unit is not lighting off. would line the eleclicial control circuit to test the heater

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Do u require a manual? plse also provide the model number of ur device

Posted on Oct 23, 2008

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Thee must be a problem with the circuit. Try asking for hands on support.

Posted on Oct 23, 2008

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Provide details about model number ..........

provide more info ......

check the inlet power supply to the unit ..........

Posted on Oct 23, 2008

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1 Answer

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Unit will not light. want electric print of the control circuit.


do u require a manual? plse also provide the model number of ur device

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Have a rinnae royal gas lok heater. Cant start it after gas was shut off. How do you get the ignition to work and start the pilot light again


When the gas was turned OFF, air got in the line(s) and created an air pocket. This air will need to purged from the system, before the heater will light. It only the shutoff valve on the gas line to the heater was turned OFF, it will be easier to purge. If your Rinnai heater has manual ignition rather than electronic ignition. Holding the control down in the Pilot position, will eventually purge the air. If you have electronic ignition, continually trying to light the unit will do the same thing, but take longer to accomplish. Consulting your Rinnai will also help you with this situation.

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Water heater not heating water , single element 110v replaced still no hot water


How To Test High Temperature Cutoff Switch Located at the Upper Heating Element Before testing the electic water heater elements we should check out the high temperature cutoff switch since a problem there will simply turn off power to both heating elements.
On an electric water heater the upper heating element may have two, three, or four electrical terminals, and above the upper thermostat is a high temperature cutoff switch with four terminals. You should be able to identify these parts by looking at the water heater's wiring diagram found on the tank or inside the panel cover.
The electric water heater high-temperature cutoff swtich will turn off the entire water heater if temperatures are too high. If this cutoff is not working the water heater will simply not heat at all. You can use this switch to test to confirm that the incoming electrical power circuit is indeed bringing power to the water heater.
Turn off electrical power to the heater at the electrical panel: WARNING: possible fatal electrical shock
Set the multitester or VOM to its 250 VAC scale, and attach the tester probes or alligator clips to the two uppermost terminals on the control (L1 and L3 on the top left and top right in our photo below). These are normally the incoming electrical wires from the power circuit to the heater. "L" refers to "Line voltage" on most controls.
Test for line voltage: Now you can turn on electrical power to the heater. Your VOM should show voltage close to the voltage on the water heater's identification tag: typically this will be 208V or 240V for a 240V water heater, or it might be just 115V or 120V for a 120V water heater. If you do not see voltage close to the rated voltage you need to call an electrician to diagnose and repair the problem.
Turn off Electrical Power to the Water Heater again. Don't skip this step or you may be killed or you may ruin your test equipment.
Test the High Temperature Cutoff Switch itself: set the VOM to its Ohm or resistance scale using the most sensitive setting (R x 1). Touch one probe to the upper left terminal on the control (L1 in our photo at left). Touch the other probe to the lower left hand terminal on the control (T2 in our photo at left).
The ohm meter needle should move (or your digital multimeter DMM should show some number other than infinity). If no continuity and infinite resistance is what you read, try pressing the reset button on this control (the red "RESET" button in our photo at left).
If you cannot reset the control then this device is not working and it needs to be replaced.


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I had a similar problem with only fan air then the blinking lights, found out that mice had got into the circuit board and corroded some connections with their urine. I would try the above solution by turning the power off for ten sec first but remember that you have to leave it for a few minutes before you operate remote.

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this is not an air conditioner but a fan forced heater. The control unit has died and a replacement is over $170.00 !! It's going to be recycled.

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1 Answer

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1 Answer

Everytime I turn on oil heater it breaks circuit in house possibly a fues gone but plug is moulded?


Sounds like a short circuit/ Or a weak breaker. If there were a fuse in the heater it would not trip the breaker because the circuit would be open with a blown fuse. To check the unit from the plug use an ohm meter and test from each terminal on the plug to the half rounded ground. You should have no reading at this point. If you do there is a short in the unit.

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