Question about Bosch HMV9305 Microwave Oven

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Vent fan runs intermittently, starts on and off regularily

I have a brand new Bosch HMV9305 Over-The-Range Microwave and Ventilator. I haven't started using it yet. But for some reason the fan/blower will run (at somewhat slow speed) automatically for maybe 5-10 minutes then stop for a few minutes, and start again. It was supposed to be installed for interior room circulation. I read on the manual that the fan will start will the temperature around the microwave is high, but the temperature is not high. The room is kept at 75 degree.

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I read in a different online review that whenever a room is above 70 the vent fan will start automatically for this microwave to cool it down. It is a built in feature and there is no way to turn it off.

Posted on Dec 10, 2007

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I don't have the manual but there should be a temperature setting for the fan to come on.

Posted on Jun 23, 2007

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If you wish to get some details; check the site linked here. Pull up older posts.
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Jun 08, 2016 | Bosch HMV9305 Microwave Oven

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Mmv5165bas vent fan will not stop running


Check to see if there's a relay providing power to the fan. If there is, the contacts might be sticking in the closed position. Assuming that this is an over-the-range unit, disconnecting the vent fan completely might not be a good idea as heat/steam from foods cooking on the range would more likely damage the microwave.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

Apr 29, 2014 | Microwave Ovens

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How do I replace the touchpad on a Bosch microwave?


Most microwave manufactures do not sell parts to the public because if you open up a microwave oven and don't get it all back together exactly right, you could receive microwave burns or be blinded when you run it. Best to just take it to the recycling place and get a new one. Seriously, these things are extremely dangerous if you don't know what you are doing.

Mar 23, 2014 | Bosch HMV9305 Microwave Oven

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Microwave starts running as soon as door is shut and gets very hot.


You probably have a shorted cook relay (see video), or possibly a bad door switch (see help file).

Dec 26, 2012 | Bosch HMV9305 Microwave Oven

1 Answer

Intermittent heating


From the description you have a bad latch switch on the door caused by build up of food particles or ware.

Mar 05, 2012 | Bosch HMV9305 Microwave Oven

1 Answer

How does this microwave exhaust system work. The installer did not use any duct work, so is the exhaust internal somehow? There is no grill on the exterior for exhaust


The exhaust fan appears to intake through a louvered vent in the bottom rear of the microwave case and output through a grease filter near the top front center of the case. You may be able to see some vent holes along the top of the case though these might be obscured by the manner in which the microwave was installed. You should be able to pop off the front panel that runs above the door but you'll need to consult the owners manual for specific instuctions.

Cheers.

Apr 08, 2011 | Bosch HMV9305 Microwave Oven

2 Answers

Hmv9305/01 microwave @ 13months old the magnetron blew, authorized bosch repairman, replaced using bosch magnetron. warranty for 90 days jan of 2011 same problem, why does this happen? should i ditch...


With all due respect, what are you doing to it?
If you use it with nothing in the cavity, that will kill the magnetron otherwise it will last for years and years.
Very unusual and Bosch is a well respected name.
If there is a probem with the oven, Bosch will replace it so take it up with Bosch.

Apr 01, 2011 | Bosch HMV9305 Microwave Oven

1 Answer

Fan runs, light is on, turntable turns, but doesn't heat. Problem is intermittent (Maybe once/week or even less) but very frustrating.


Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

Dec 05, 2010 | Bosch HMV9305 Microwave Oven

1 Answer

Microwave vent turned on by itself and won't turn off


The HMV9305 has an automatic vent turn-on feature. It senses heat, possibly from the oven or range beneath, and turns on the exhaust fan until temps return to normal. Sometimes this may take 4-5 minutes, which can seem like an eternity of listening to the blower run, but it is a safety feature designed to prevent damage to the microwave from excessive heat generated by the cooktop or oven beneath it.

Jan 24, 2010 | Bosch HMV9305 Microwave Oven

1 Answer

Microwave turntable is loud and clunky sounding.


If the unit is brand new as you say then it is covered under the warranty and the 800# for Bosch is in your paperwork that came with it.

It sounds like the glass platen (turntable) hub is either binding or else the drive mechanism itself either has a bad tooth on the main gear or tooth wheel. Some may still use a chain type drive mechanism as well.

If you call that 800 number - the customer service dept there will advise you as to what needs to happen next. It's possible they will either replace or repair at their expense.

Who installed the unit?

Let me know?

Best regards,

Frank

Mar 07, 2008 | Microwave Ovens

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