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Blower on our house heater will not shut off

The blower on our gas heater turns on when we plug it in but does not shut off at all until we unplug the unit. Is there anything I can do to fix it or does the control need to be replaced.

thanks,
Steve

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Check the limit switch.most look like box with a switch or button.Next to the switch or button it will say auto - on .The button style will run the fan if the button is pulled out.Common problem is the button breaks fans stays on all the time.
Unplug the unit before replacement, fairly straightforward repair, if you question your ability call a professional, as this is a safety device.

Posted on Jan 11, 2009

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Bradford-white water heater wont heat water.the blower motor hums but wont blow.also,pilot light wont light,is this just a safety feature?


Water heater is not identified and gas valve is not known.
Review options below:

1) Add a comment and describe what gas control valve is on the water heater, and model number from label on side of unit. Include what you have tried so far.

2) Try unplugging water heater and see if water heater resets.
Disconnect blower from gas valve, then plug blower in to see it it operates.
This will eliminate or include blower as suspect.

3) Open following link to download service and product manuals to help troubleshoot exact model.
http://www.bradfordwhite.com/documentation/residential/gas.asp

4) Open following link to identify gas valve.
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli

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How to change blower motor in. 99 grand Cherokee


Check this procedure...Blower Motor Resistor and Controller Replacement


REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

heater-AC housing.

5. Remove the blower motor resistor or controller from the heater AC housing.


INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

housing is indexed to allow (controller power module) mounting in only one

position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.

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Hope this helps (rerember to rating this and leave a testiomonial).

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1 Answer

Have model MD300TGA with blower.Blower is set on auto but doesnt kick on.When should blower start up after room has reached desired temp. and heater has shut off?


There should be a limit switch and once the heater reaches the set temperature the blower gets signal from the limit and that turns on the blower. If you are not getting the blower until after the room is up to temp then it is coming on it may be the low limit is bad and it is cooling itself down on the high limit. If you are unsure of this please consult a heating service person, this is a serious problem that a trained service person should deal with. This can lead to a house fire!

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1 Answer

How do i change blower motor resistor on 99 jeep grand cherokee


Welcome to FIxYa.com



Blower Motor Resistor and Controller Replacement

Image Blower Motor Resistor Or Controller/Power Module Remove/Install

REMOVAL

1. Disconnect and isolate the batten' negative cable.

2. Depress locking tab and unplug the wire harness connector from the blower motor

resistor or controller (power module).

3. Depress locking tab and unplug the resistor or controller connector from the blower

motor.

4. Remove the 2 screws that secure the blower motor resistor or controller to the

heater-AC housing.

5. Remove the blower motor resistor or controller from the heater AC housing.

INSTALLATION

1. Install the blower motor resistor or controller to the heater AC housing. The

housing is indexed to allow (controller power module) mounting in only one

position. Tighten the mounting screws to 2.2 Nm(20 in. Lbs.).

2. Plug in the wire harness connector to the blower motor resistor or controller.

3. Plug in the connector from the blower motor resistor or controller to the blower

motor.

4. Connect the batten' negative cable.

leedavidian_45.jpg



Thank you for using FixYa.com

Regards, Lee Davidian

Nov 22, 2010 | 1999 Jeep Grand Cherokee

3 Answers

Blower motor resistor, where is it located/


It will be up under the dash on the passenger side near the blower motor. It will have 5 or six wires in its connector

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1 Answer

How do you change a heater blower moter in a 1998 Dodge grand caravan


Removal & Installation


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The blower motor is located behind the glovebox, behind the blower motor cover

  1. Disconnect and isolate the negative battery cable, then wait 2 minutes before proceeding with the removal. This will effectively disable the air bag system preventing possible personal injury.
  2. Remove the glove box from the instrument panel.
  3. Remove the A/C-heater blower motor cover.
  4. Disconnect the blower motor wiring connector.
  5. Remove the blower motor wiring grommet and feed the wiring through the blower motor housing.
  6. Remove the blower motor mounting screws.

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Once the cover is removed, unplug the electrical connector and push it through the opening in the housing


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The blower motor is secured to the housing with three small screws

  1. Allow the blower motor assembly to drop downward to clear the instrument panel and remove from vehicle.
To install:
  1. Place the blower motor assembly into position on the A/C-heater unit and tighten the mounting screws.
  2. Route the blower motor wiring through the blower motor housing and seat the wiring grommet in the hole of the blower motor housing.
  3. Reconnect the blower motor electrical connector.
  4. Install the A/C-heater blower motor cover.
  5. Install the glove box into the instrument panel.
  6. Reconnect the negative battery cable. Check blower motor operation.

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