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Tekmar 508 shows error

I have error flashing on my tekmar 508 thermostat and instead of displaying the room temp it is displaying OPn.what does this mean and how can I correct it?

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Frigidaire 2004 side by side, FSC23F7DWO flashing error code 2. Now what?


look at the lower half of the back of the freezer wall in the freezer,if you see frost you have a bad defrost heater ,control,or defrost thermostat.make sure the fan in the freezer and cond.enser in back are working. coil under ref may need cleaned,if you un plug for 10min listen, plug in. if you hear humm,and click.over load -relay is bad.

May 22, 2015 | Frigidaire FSC23F7D Side by Side...

1 Answer

Will not heat up


That is a thermostat. it should have continuity at room temp, and open at popcorn popping temps. There are no replacement parts for this manufacturer.

Jan 09, 2014 | Nostalgia Electrics KPM-508 Popcorn Maker

2 Answers

I have a Comfort Zone CZ1500W showing an AO5 error code. I have 9 ohms across each element. The fan thermostat reads open. When I bypass it the fan runs, but no heat. The element thermostat reads


Everytime I turn on the CZ heater, the display reads A05 and then it goes away when i set the temp. As far as I can see and feel, I'm not experiencing any issues with the heating, fan, or thermostat or the extension cord running hot. I'm concerned that something could be wrong or unsafe, with Comfort Zone filing for Chapter 7, anyone know who is offering support or a number I can contact?

Dec 02, 2011 | Comfort Zone CZ1500WC Infra-Red...

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Service Code F-3


Hello,
The error code's F3&F4 are codes that mean their is a problem with the oven tempature sensor and that sensor is uncappable of telling the control board what the temp. is in the oven. This is what the sensor looks like,oldtech2332_20.jpgTo check the sensor,unplug it and place meter leads into the white plastic plug at the end and check for between 1060-1100 ohms of resistiance when its good.

The F3 error code means that the sensor is shorted so if it indeed is shorted the meter reading will show ZERO ohms resistiance instead of the 1060-1100 of a good one.

The F4 error code is for sensor that has a open circuit,so instead of the 1060-1100 of a good it the display on the meter will show infinate resistiance ( the meter display will not change)

If on either the F3/F4 error code if at room tempature when checking the oven sensor if the display shows anything other that 1060-1100 ohms the sensor is going to be the problem and needs to be replaced.

Nov 30, 2011 | Magic Chef Ovens

1 Answer

Can't get my Simple Comfort 7890-DHW thermostat to set on heat. Tried the mode/program and have made it worse.


Push up or down arrow once. H will flash, this is heat setting. Set your temp. Then C will flash, this cool temp. Set your cool temp. After short delay stat will go back to display room temp. Red light heat is on. Green light cool is on. Hope that helps

Mar 24, 2010 | Honeywell Electronic Programmable...

1 Answer

Housesitting. RTH111B model. I cannot keep the


That is a NONprogramable T-stat. There is no program to overide, therefore there is no need for a "hold" option. To set the temp, place the switch on the side marked

COOL
OFF
HEAT

to the desired setting, and push the up down arrows on the front until the display shows 80.

The DISPLAY will revert back to the current room temperature within a few seconds, and will keep the unit on until it reaches the desired temp.

The set temperature remains at 80, it just shows the current room temp.

Aug 31, 2009 | Heating & Cooling

1 Answer

Tekmar 150


www.tekmarcontrols.com/literature/acrobat/a150.pdf 

Mar 11, 2009 | Water Heaters

2 Answers

I have a vitodens 100-w combi boiler and tried to turn the heating on just to give it a working as was advised. However, I have no heat coming to my radiators. The boilers seems to be working as my hot...


Here's the deal: If your Vitodens 100 has outdoor temperature sensing capability, either built in or via external aftermarket control such as Tekmar or other, and the temperature outside is above warm weather shut down (WWSD), then the boiler will not operate for space heating, but will operate to make Domestic Hot Water (DHW) only. Generally speaking WWSD is facoty set at 20*C, since this is normal room temperature so the boiler will not need to operate at temperatures above this number as it is warm enough outdoors to heat the house to comfortable levels.
If your Vitodens 100 does not have outdoor temperature sensing capability then you should check to see if your room thermostats are operational and calling for heat since the boiler is only responding to this on-off control based on room temperature. (turn up your room thermostats)
In both cases you need to make sure that your heating system's distribution pump and zone valves are operating correctly.
In any case you should be calling a heating contractor if you suspect that there is a problem with your boiler and/or heating system.
Good luck.

Aug 07, 2008 | Heating & Cooling

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