Question about Hotpoint RGB745 Gas Kitchen Range

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Oven takes a long time to preheat

I have a Hotpoint RGB740 converted to LPG. 1 month out of warrenty, the oven has begun to act up. The oven takes more than an hour to preheat to 350. The ignitor is lighting the gas. The flames are a lightly dancing blue with no yellow tips.
The broiler appears to be working.
I have never used the self cleaning feature so I would not know if it was functioning as usual.
The top burners fuction fine even with muliple burners lit.

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Re: Oven takes a long time to preheat

Before we go into diagnosis mode, call the customer service # in the owners manual and complain about the problem.  They usually will make a concession when it is this close to the warranty period.  Let me know what you find out.

Posted on Oct 25, 2007

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It gas not electric. There is NO hidden element. It a bad sensor.

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Oven takes forever to preheat

The way the oven works is like so:
1) User sets the desired temperature
2) Power is sent to the ignitor
3) The ignitor is then energized, drawing 3.2 amps of current
4) When the 3.2 amps is drawn, the gas safety valve is allowed to open and gas flows into the burner assembly in the oven.
5) This gas is then ignited, causing the oven to heat.
6) As the oven heats up, the oven sensor, which is the metal rod located at the top on the rear oven wall, converts the heat into an electrical signal, relaying this information to the main control which in turns displaying the temperature.
(In models with a dial thermostat, there won't be a sensor, though a metal wire with a bulbous end will be present, which is actually connected to the thermostat.)

Jun 21, 2012 | GE Kitchen Ranges

1 Answer

I need to learn how to use my oven, because i don't know how to turn it on.i need to bake,so can u tell me how?

You can get the manual for the RGB745 at the GE Appliances support site: . Enter the model number in the search box. There are several models that start with RGB745.

On most of the Hotpoint ovens for regular baking, press Bake and use the + or - buttons to set the desired oven temperature. Then press Start/On. Then the oven will display Pre as it re-heats. When the thermostat indicates the desired temperature is reached, the oven will beep. The racks should be on the middle positions for most baking. (For roasting use the lowest positions.) Put the food in when the oven is done preheating. When done, press Clear/Off. Timed baked requires the clock be set correctly, then set the start and end times.

For the older ovens with dials to control the oven, set the first dial to Bake and the second to the desired temperature. Wait at least 10 minutes for the oven to preheat. Again put the oven racks in the middle of the oven for most baking.

Do not lock the oven latch and keep the oven closed through the baking cycle as much as possible. (Rotating pans and basting steps should be done quickly so that the oven doesn't cool much.)

I hope this helps.

Cindy Wells

Feb 11, 2011 | Hotpoint RGB745 Gas Kitchen Range

1 Answer

Having just converted my Vulcan Endurance G36L Range from Nat. Gas to LPG Using the following parts recommended by Vulcan : New 1/2 psi pressure regulator, 6 size 51 hood type top burner orifices,1 size...

The oven safety valve has to be cranked down for propane.themobilian_815.jpg
Get a good fitting wrench and tighten this spud down and open the air shutter on the burner.
This video shows how to tackle a crank down and flip type LP conversion whilst yours might be a bit more fancy it still must be adjusted like any other stove:

Jan 10, 2011 | Vulcan G36L Gas Range

1 Answer

Hotpoint oven

From MNTECH, "If your oven would light sometimes, but usually not, or take a very long time to ignite, then replace the oven igniter. Even though it probably is glowing, it needs to draw a specific minimum electrical current (in amps) for the gas safety valve to open and release the gas. Also low voltage can affect how many amps the igniter draws, so that may be a factor, but not as often."

I live in Japan. I got a brand new range in june and it has had this problem for four month. The igniter glows but the gas never (or rarely) releases. Often it would preheat but not maintain the temp while baking. **augh** After reading MNTECH's solution I got a transformer and plugged my range into it to change the voltage (100 to 110) and I haven't had a problem since. THANK YOU MNTECH FOR POSTING THIS SOLUTION

Aug 18, 2008 | Hotpoint RGB745 Gas Kitchen Range

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Hotpoint oven overheating

Yes this is repairable, the probe in oven called a thermostat,that wire that goes out the back small hole goes up to the oven temp. knob ie thermostat. part # .WB20K10004 you can find it at about $60.00 good luck

Mar 28, 2008 | Kitchen Ranges

1 Answer

Preheating Oven

Cold Stove, you may not be able to. The issue here is that oven manufactures put on their units a fast preheat. However it isn't possible to preheat an oven for 7 to 9 minutes and bake short time bake items properly. Also the oven sensor will respond faster than the absorbation rate of the sheet metal in the oven liner. To preheat an oven properly takes 15 to 20 minutes before putting in the food. I see this will a lot of current ovens. Sounds like a normal format of the control.

Feb 03, 2008 | GE JBP24 QuickClean Electric Kitchen Range

1 Answer

Bake part of kenmore not working seems to take to long

Chances are the oven ignitor will need to be replaced.  Look and see if it glows.  If it does then it is weak and not opening the gas valve to lite.  Let me know what you find.
Comment by fridgetech, posted on Oct 20, 2007

Should be able to remove the bottom drawer and unplug the ignitor from below.  Or you can cut the wires on the old ignitor and splice the new one in using ceramic

Oct 20, 2007 | Hotpoint RGB745 Gas Kitchen Range

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try changing the oven sensor its in the oven looks like a small rod coming out you need to remove 2 phillip screws the take it out

Jun 08, 2007 | Hotpoint RGB745 Gas Kitchen Range

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