Heating Help

Inefficient compressor

@ July 22, 2011 8:52 PM in Inefficient compressor

What are the signs of a imefficient compressor??

Thanks

@ July 10, 2011 1:07 PM in Compressor sensors

Thank you....tomorrow I will get the make and model number. And you are right the module has 120v at terminals T1 and T 2 and terminals M1 & M2 is a set contact that is on series with the high low pressure switches to break power to the compressor contactor coil on the schematic it says to ohm out the sensors when they are at room temp......the resistance value is stated on the schematic I believe I saw! 750- 1000 ohms.....what will I read if they are at fault if I read too high or too low resistance??? And so you think rampage will change the resistance value???

Compressor sensors

@ July 9, 2011 10:21 PM in Compressor sensors

Hey everyone just want to know what these four sensors do on these compressors that I'm working on its a sixty ton or fifty air handler its packaged condensor is cooled by water from a cooling tower. These sensors are located on the compressor shell to the left of the electrical terminals they are hooked up to a solid state module right on the compressor this module has terminals.....m1, m2, t1, t2, s1, s2 etc..can any one help out??

weird....?

@ June 29, 2011 12:16 AM in NORMAL????....OR NO....???

after i recovered all the freon and evacuated the system i finally fixed the humidity problem in the house but like i said before all coils are spotless but the pressures are way off 40f of subcool and no superheat head pressure is close to 300psi and suction around 55psi. when i recover more refigerant to get subcool down and superheat up the suction pressure drops and so does my tempature split. so i left system as is but i will return tomorrow to recheck. (system has piston type metering device ) and how come my liquid line is so cool when the head pressure is so high???and how come i cannot get a proper superheat and sucooling reading???and how come the humidity level dropped dramatically in the home after i recovered evacuated and recharged??? its like the problem is fixed but weird readings.......

Still...

@ June 28, 2011 1:29 AM in NORMAL????....OR NO....???

I recovered all refrigerant evacuated and recharged. My temp split went up to, 18f but my head pressure is really high 275psi at 76f ambient temp my suction is at 55 psi with still no superheat I have a really high subcool 40f and the liquid line is not warm at all all coils are clean.it is a 13 seer trane condensing unit original seems like the evaporator coil has been changed It is a 4 ton system and this is a piston type metering device not a txv I will go back tomorrow to check out again but if the home is still humid should I be checking the orifice size in the evaporator??? Stuck???...inefficient compressor??

thanks

@ June 26, 2011 11:59 PM in NORMAL????....OR NO....???

ok i will do that tomorrow but what about the temp split changing is that a result of slowing the fan speed down??

NORMAL????....OR NO....???

@ June 26, 2011 10:15 PM in NORMAL????....OR NO....???

HEY GUYS. I HAVE A PROBLEM WITH A 4 TON TRANE RESIDENTIALSPLIT A/C SYSTEM. THE COMPLAINT IS HOUSE COOLS TO SET TEMPATURE ON A NORMAL 75F-80F DAY DESPITE VERY HIGH HUMIDITY LEVELS. THE CUSTOMER STATES THAT ON A VERY HOT DAY THE SYSTEM RUNS ALL THE TIME WITH HIGH ELECTRICAL BILLS, AND THE HOME IS VERY HUMID. SO MY QUESTION IS WHY IS THIS SYSTEM NOT REMOVING HUMIDITY. TODAY THE AMBIENT TEMP WAS 78F BUT NOT THAT HUMID . THIS IS A R-22 UNIT 4 TON, WITH A TXV. TEMP SPLIT IS 15F EVAP AND CONDENSOR COILS ARE BOTH VERY CLEAN. HEAD PRESSURE IS AT 250PSI AND SUCTION PRESSURE 72PSI COMPRESSOR RLA ON NAMEPLATE IS 22 AMPS COMPRESSOR RUNNING AT 21 AMPS. SYSTEM HAS NO SUPERHEAT AND SUBCOOL IS 37F (112F-75F=37F). COULD THIS BE OVERCHARGED CAN AN OVERCHARGED UNIT CAUSE A LOW TEMP SPLIT , BEFORE I LEFTI SWITCHED FAN SPEED FROM HIGH TO MEDIUM HIGH AND GOT THE SPLIT TO 19F. WILL RETURN IN A COUPLE OF DAYS . AND HOW COME THE LIQUID LINE WASNT HOT AT ALL (TO TOUCH) AND WHEN I WAS RECOVERING REFRIGERANT COULDNT GET SUBCOOL DOWN. PLEASE HELP;;!!!!                                        GUYS I KNOW ITS ALOT OF WRITING BUT 4 OTHER COMPANIES WERE THERE BEFORE ME AND NO FIXED PROBLEM

traps

@ June 18, 2011 9:55 PM in traps

hey guys
just want to know when traps should be used in ac/r refrigerant lines.
and i replaced a compressor on a r-22 refigeration system the condensor is on the roof about 12 feet above 2 evaporators(the 1 condensor feeds 2 evaps) should there be traps on the suction line??

a/c

@ June 18, 2011 6:31 PM in a/c

HEY GUYS , HOW IS THE PROPER WAY TO SIZE A A/C UNIT. I NEVER DID ONE FROM SCRATCH, I MOSTLY JUST DID DIRECT REPLACEMENTS. I JUST WON A BID TO REPLACE A EXISTING 20 TON PACKAGED UNIT AND I WANT TO SEE IF THATS THE CORRECT UNIT, AND ALSO WANT TO KNOW FOR FURTHER WORK.
 THANKS PAUL

ecobee

@ March 23, 2011 6:26 PM in ecobee

has any one used those ECOBEE communicating thermostats?? im going to install 9 of them saturday. just want some feedback.

economizer

@ January 24, 2011 12:10 AM in economizer???

all its for is free cooling during the a/c mode. its a 7.5 ton york packaged unit

economizer

@ January 24, 2011 12:09 AM in economizer???

all its for is free cooling during the a/c mode. its a 7.5 ton york packaged unit

economizer

@ January 23, 2011 3:39 AM in economizer

hey everyone. im having trouble with a york packaged unit with a w7212 honeywell economizer. i have been to this job twice for no heat. upon arrival i found the heat running normal, but also find the economizer in the fully open position. i disconnect the plug and reconnect it and it closes, then come back to find it open. if im not mistaken i thought the economizer only opens on a call for a/c, depending on the enthalpy control am i missing something???

economizer???

@ January 22, 2011 8:48 PM in economizer???

hey everyone. im having trouble with a york packaged unit with a w7212 honeywell economizer. i have been to this job twice for no heat. upon arrival i found the heat running normal, but also find the economizer in the fully open position. i disconnect the plug and reconnect it and it closes, then come back to find it open. if im not mistaken i thought the economizer only opens on a call for a/c, depending on the enthalpy control am i missing something???

economizer???

@ January 22, 2011 8:48 PM in economizer???

hey everyone. im having trouble with a york packaged unit with a w7212 honeywell economizer. i have been to this job twice for no heat. upon arrival i found the heat running normal, but also find the economizer in the fully open position. i disconnect the plug and reconnect it and it closes, then come back to find it open. if im not mistaken i thought the economizer only opens on a call for a/c, depending on the enthalpy control am i missing something???

SENSING FLAME???

@ November 6, 2010 5:25 PM in SENSING FLAME???

HEY EVERYONE WHAT IS THE PROPER WAY TO CHECK FLAME SIGNAL?? THEY WAY IVE BEEN DOING IT IS THAT I PUT MY METER LEADS IN SERIES WITH THE FLAME SENSOR WIRE AND SET THE METER TO MILLIAMPS OR IS IT MICROAMPS?? AND WHAT SHOULD I BE READING???THANKS

Megaohms

@ June 16, 2010 12:59 PM in Megaohms

I just want some info on a megohmeter .what does it do and how to use it and when should I check a compressor with it?

Yellow

@ March 31, 2010 2:38 PM in Yellow

What would cause a yellow smoke when you take a smoke test?and what exactly is it?

Three phase

@ March 30, 2010 12:04 PM in Three phase

I was working on a semi hermetic compressor Three phase and I noticed that each winding had two wires to it and it was connected to two different contactors why is that??

low limit

@ March 30, 2010 12:04 AM in Triple acting relay

turn the low limit setting all the way down.....or put in a regular aquastat relay.......paul s

thankx

@ March 28, 2010 2:29 PM in hard start kit

thankx guys that really helped

O & B TERMINALS

@ March 27, 2010 7:22 PM in O & B TERMINALS

what are the o & b terminals on a tstat.....and how are they wired for a heat pump???