If you have a heat pump A/C unit then you have auxillary heat and emergency heat. The EM stands for emergency heat, which is using only your electric heat strips or gas heat, depending on your system. The auxillary heat uses your compressor inside of your outside unit. Say the house is 60 degrees inside and you set your stat to 70, the temperature difference is so great that if the heat pump alone cannot satisfy, then the auxillary heat would come on to assist the heat pump. Say you were to get a leak in either your condenser or evaporator coils, your heat pump would not work on the regular heat setting on the tstat. In this circumstance you would want to use just the emergency heat until a service tech can evaluate the system.
EM only means Emergency Heat. It is ONLY on HEAT PUMP thermostats. The switch disables the contactor on the outdoor unit and turns on the supplemental electric heat. If you have one on your gas unit, and it is not equipped with a heat pump, ( called a Fossil Fuel System) then you have the wrong thermostat. Look on line for the manual by the brand and model # of the thermostat and it will spell it out for you.
AnswerEM typically means Emergency Heat. If you have a gas furnace, the EM does not pertain to your system.
I don’t get it
When applied to electrical waveforms, a 'harmonic' is a multiple of the fundamental frequency.
No. RMS is the the true heating ability of A.C. RMS means root mean square. That is the square root of two divided by 2 equals 0.707. Multiply the A.C. times 0.707 equals RMS.
I assume you mean electricity produced by burning coal, natural gas, or oil. These are the traditional fossil fuels used to produce heat, steam, and hence electric power.
It means that the low pressure switch is open. Check the heat pump schematic to see if it is supposed to be an open or closed switch. Schematic electrical drawings are drawn in the de energized position. This means that when there is no voltage applied to the device, this will be the position of relays and contacts.
The r.m.s. value of an alternating current or voltage is the value of direct current or voltage which produces the same heating effect.
Thermostat
A thermostat is a heat operated device designed to control temperature or provide a safety cut-off
A structure or apparatus in which heat is generated, as for heating houses.
Please clarify your question. What do you mean by "release air"?
Unless your van has some unusual heating system, the heat going out could mean that you are totally out of coolant, or your thermostat may be stuck closed. If you have a normal heating system and your heater is still blowing air, just not hot air, it could be those two things. Is the van having any other problems?
According to the instructions, "Er" is displayed when the system can't keep up with the heating demand.
thermostat, thermometer, thermos, hypothermia
Not sure what you really mean but if temp of heat does not change = likely bad thermostat etc. If gauge does not work at all but heat is fine then gauge or electrical type problem to the gauge
If you mean an electric furnace then normally it is nichrome. a heating element in a heat strip is made of what type of wire
Not sure what you mean exactly....but a thermostat triggers your heating/cooling system on and off, thereby maintaining whatever temperature to which you have it set.
it means to heat something up (in science probably with a Bunsen burner)
"EMHT" is most often found on heating and cooling systems. It is an abbreviation that means "Emergency Heat". EM is for emergency and HT is for heat.