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My duct ed split unit thermostat showing EF AND NOT WORKING

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Hmmm seems like the thermostat is having an electronic failure you may want to have it replaced by whom ever installed the thermostat for your duct system

Posted on Dec 05, 2016

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Posted on Jan 02, 2017

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I bought a new thermostat for my for my Depot commercial deep fryer model EFS - 40 at work for 3 days after that I just cut off and won't come back on so what would be the problem


Questions, Troubleshooting Help & Support Page 9 - Fixya

www.fixya.com/troubleshoot/page-9
I bought a new thermostat for my for my Depot commercial deep fryer model EFS -40 at work for 3 days ... SHOWS NO SIGNAL IT WAS WORKING FINE UNTILL I TRYED THE FAV BUTTON ... Once I found a fried ground wire in trunk replaced.

Sep 25, 2015 | Kitchen Appliances - Others

1 Answer

We have a Misubishi mini split ducted heat pump. The thermostat is saying no signal What to do?


Try cycling the power supply to the outdoor unit. The indoor unit is powered off of the outdoor unit and the wireless signal to the room sensor originates in the indoor unit. Something may have disrupted the output signal to the room sensor and a quick reset MAY do the trick.

Jul 23, 2015 | Heating & Cooling

1 Answer

Why does the compressor for the air conditioner not go on even though the circulating fan does.


What sort of air con is it? If its a split or ducted with a separate outdoor unit, does the outdoor fan start ?

Mar 18, 2015 | Heating & Cooling

1 Answer

The blower starts before its warm and it blows cold air for about 30 sec when its shutting down .


When any unit 1st come's on, you'll always have some cold air that's in the ducts that will blow out before you get warm air. If your duct work is uninsulated in a cold basement or crawl space then it will be even more noticeable. When the unit is heating from the Heat Pump mode, it takes a little longer for the gases to get warm enough so you'll fell heat. When it gets cold enough for the unit to switch from heat pump to the gas or electric heat source, you'll get warm air faster. If you have gas heat, some Thermostats have an anticipator setting for the gas valve. If it's set wrong it will effect the on/off cycle of the gas valve.
All duct work in non heated and a/c spaces, including inside walls,above dropped ceilings, in attics and crawl spaces, must be sealed & taped at the seams and joints and then insulated and taped.
Most new construction has solved that problem with insulated duct board, flexible insulated supply's and special tape.

Dec 12, 2013 | Rheem 13PJL30A01-RHLLHM3617JA 2.5 Ton 14...

1 Answer

We have a split level home. The heating system is steam/boiler heat. There are three thermostats that control the heat on the different levels. The thermostats on the top floors are set at 68 sometimes...


JUST A REFERENCE; Unit designed to heat 900 sqft. 300 sqft per thermostat. When heat comes on and only 1 zone is calling the unit doesn't heat 1/3. It heats the 900sqft it's designed to. Therefore that "extra heat" HAS TO go somewhere. If it doesnt go to the "non calling" zones the unit would shut down on safety because it would get too hot. So, open a window or you need a bypass damper with bypass duct installed that when the heat comes on for only one zone that "bypass" opens and sends the "extra heat" back into the return rather than to the "non calling" zones. To answer your question, nothing is wrong with your unit or tstats, it's the duct work. Maybe $600 to $800

Jun 05, 2017 | Heating & Cooling

1 Answer

Display in thermostat not showing


Please check the thermostat display connections. If it
doesn't improve, we have no other option but to replace
it. Thermostat Display always have a clear display unless it becomes defective. Hope this will help you.

Jan 06, 2010 | Mitsubishi MSZ09UN Air Conditioner

1 Answer

Converting a ceiling control unit to a thermostat on the wall.


Unless the new unit is 24 volt thermostat convertible inside the unit, you will have to use a line voltage(120v) wall thermostat.

Mar 25, 2009 | Coleman Heating & Cooling

1 Answer

Broken shoe mount on Sigma ef-400 dg super Flash


Contact Holly Enterprises- The manufacture a metal foot to replace broken plastic ones on flash units. The made one specifically for some of the popular Vivatar flash units and I am not sure if theses can be used with your flash unit ro if the have others that are made especially for you strobe. I also don't know if the are user installable.

If you have to take the unit apart to do this procedure, you have to consider the high voltages that can remain in the unit even after is it turned off, If Holly can not assist you, check with the distributor of the flash- It may be better to have it professionally repaired in case there are other issues such as disconnected or broken wires that may have been damaged when the base was torn off.

Please let me know if you have any lick with this. Ed

Nov 15, 2008 | Sigma EF-500 DG Super for Canon EOS TTL...

1 Answer

Duct size


THREE TON CAN GET BY ON A 12 RETURN AND A 12 SUPPLY SPLIT INTO TWO 10S ONE FOR EACH SIDE OF A DOUBLE WIDE. EVEN BETTER IS A 14 RETURN AND A 14 SUPPY SPLIT TO TWO 12S . IF ITS A SINGLE WIDE I THINK I'D TRY TO PULL TWO 14S ONE TO SUPPLY ONE TO RETURN.BIGGER THE RETURN THE BETTER. LIKE SUCKING A MILKSHAKE THROUGH A LITTTLE STRAW. BIGGER IS BETTER.BE SURE TO ELEVATE OR BLOCK UP THE DUCT OFF THE GROUND WITH STYROFOAM BLOCKING 6 IN THICK IN 2 FT LENGHTS , WORKS WELL GETS DUCT UP OUT OF DIRT AND WATER AND RODENTS CAN CRAWL UNDER.

Jul 04, 2008 | Intertherm P3RA-036K Air Conditioner

1 Answer

Goodman PCK-060-1C. suction 52, coil/filter/blower/restrictor/drier okay. Recovered the charge and recharged with factory specified amount. The return air 1800 cfm. Motor 3/4 hp. It seems to me the motor...


It seems to me that your suction should be @ 76 or so. 52 is low. the coil will ice up with any suction PSI below 58. Disconnect the unit from the duct work and make sure there is no restriction in the duct size. In other words. Does the unit work properly with out the duct? I find most mobil homes have a restriction in the amount of return. A 5 ton split needs a 20 inch round return. You never see this size return on a package unit. Does the return **** the filter in? I have had to add returns to large mobil homes because there just not designed right.
this is only a possibility. Is the temperature split on the equipment between 18 and 20 If it is then I don't thing you have an equipment problem. Also make sure there are no holes in the duct work.Last one I had unit was working fine but the duct work had a big hole in it from some animal under the trailer.

May 13, 2008 | Goodman PHKJ048-1 Air Conditioner

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