I have a 2 control mattress heater. One side works fine but the other will show a f error when put on preheat

look for creeses in liquid lines. also check fualty wiring for voltage. switch power to pads if it heats look at power supply

Hi, I think that Your mattress pad possibly low quality or it was error by manufacturing company. They couldn't maintain proper quality. So this mattress pad may harmful for you health. You may get new best quality mattress pad. Also I think this website www.bestmattresslist.com may help you. Best Mattress Topper Archives BestMattressList

www.sunbeam.com/.../bedding/controls/bedding-contr...

Sunbeam ProductsHow do dual controls work? The dual ... What if my control does not regulate my side of the warming product? ... Where can I purchase replacement controls?

Finding Replacement Cords and Controls for an Electric ...

www.thriftyfun.com/Finding-Replacement-Cords-and-Controls-for-an-El...

... blanket. Finding a replacement cord or a control for an electric blanket can be difficult. ... My blanket was under warranty and I got one for free. If yours is out of ...

Finding Replacement Controls for a Heated Mattress Pad ...

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This is a guide about finding replacement controls for a heated mattress pad. It can be very frustrating to find replacement ... Read all 1 Answer ... Where can I findreplacement controllers for my Living Quarters heated mattress pad? By Steve.

Replacement Controls for a Sealy Electric Blanket ' ThriftyFun

E08 Error Message on a Samsung Electric Built-in Oven:

The E08 preheating error code appears if the set oven temperature is not reached within 50 minutes. If this code appears, the reason might be due to overheated thermostats, a defective heater or a defective relay; in which case a repair will need to be arranged.
However, if food has been put into the oven during the preheating time that may cause the error code, since the presence of food cools the oven and so it doesn't reach the right temperature. The error message can be removed by turning the oven off and turning it on again.
To prevent this error code from happening again, the oven should not be used during the preheating period. The preheating period ends just after the sound signal and the icon in the display have turned off. When the oven gives the signal, it's close to the set temperature and your food can be put in.

Electronics fail. Sounds like the digital controller has failed. A Google search finds others with the same problem. Biddeford models come with a 5-year warranty, so if yours is less than 5 years old, I suggest you contact Biddeford by telephone: 800.789.6441 or visit their website: http://www.biddefordblankets.com/warranty.asp

Which model Sunbeam mattress pad do you have? Sunbeam has some of their manuals here: http://www.sunbeam.com/manuals.aspx . The electric bedding share a manual. The direct link is http://www.sunbeam.com/BeddingManuals/SunbeamBedding/Universal.pdf .Make sure that you are using the master control for your side of the bed (that's the one closest to the plug for the wall outlet).

You may need to turn on the second control and set it to 0 at night. If you still are having a problem with the heat being uneven, you might need a replacement mattress pad. I know we've replaced several electric blankets or mattress pads due to problems with the control/uneven heat.

I hope this helps.

Cindy Wells

I don;t think there is any repair that is possible and you will need to replace your mattress pad. I would recommend you contact sunbeam directly at sunbeam.com and see if this model has a lifetime guarentee.I tried but they wanted to know how old it was and other info that I could not provide.
If you have had this good of service from their product then I would let them know and maybe they will work with you.
I have had good results contacting companies and praising their products and it don't cost much to try. Thank you

ER in temp means error code next 2 letters are first letter of part giving problem or where problem located.. if " ER DH" means def heater not coming on, does not mean heater bad but def control bad not letting voltage to heater. could need main bd also

37,008.4x - PEST_FAULT_PREHEAT_HEATER_DISCONNECT
PEST - Preheat Heater Disconnect The Preheat heater is not drawing the expected
power from the supply.
1. Run the Preheat Heater test.
2. Check the preheater wiring.
3. If the test fails, replace the preheater.