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I am a Hvac mechanic having a problem with a carrier 650ton

Good morning.I am a Hvac mechanic having a problem with a carrier 650ton credit.it will start run for about 4 minutes and trips on excessive comp surge.we have flow meters on both chw and cw lines and both basically in spec.entering cw is 76 entering.78 leaving cw 80.1 so 1.2 difference chw 52.5 51.1 evap 48.8 amp,62percent.I am thinking it is the transducer or what ever initiated the fault but cannot locate or find on diagram I would appreciate your input thank you Bill

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Phil

Consultant to Engrs, Govt & Contractors

Degree, Mech Engr Technology

 
9,514 satisfied customers
Central evaporative cooling, not HVAC; 't know who to ask. I

Central evaporative cooling, not HVAC; don't know who to ask. I have a 4-plex and I had the local license Sierra Carpet Care come in and clean out the duct system on 3 of the 4 units. When we turned the cooler back on into Unit D, we find that VERY HOT air is coming out of the end vent which is in the living room! We closed the vent flaps all the way (to the best of our ability) as all the other vents in the house were blowing out cool air. Now her temp in the living room is 88 degrees, so obviously that didn't work. I've left messages for the guy that did it with no response. Am wondering about the likelihood that they dislodge the duct connection there near that vent and what to do about getting it fixed. I somehow don't think they will be going in the attic and crawling to that end vent duct to see what's wrong. Really want it fixed, then will worry about them: Suing them for cost? Etc. Thanks so much!

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Phil

Consultant to Engrs, Govt & Contractors

Degree, Mech Engr Technology

 
9,514 satisfied customers
When replacing a flow sensor on a 100 ton CGAM chiller

When replacing a flow sensor on a 100 ton CGAM chiller Trane, do you have to drain the water from the evaporator?

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Brian HVAC Guy

HVAC/R Consultant

High School

 
1,326 satisfied customers
Back again with a question about a Thermo Pride OH6FX

HiBack again with a question about a Thermo Pride OH6FX furnace, an Amana ASZC18 Heat Pump controlled by a Prestige IAQ 2.0 thermostat.. As wired the furnace blower runs high speed (1622 CFM) all the time when the heat pump is cooling the house in both low and high stages. After reading the furnace lit I realized it's Dehum connection when activated runs the blower at a lower speed. So I connected the Y1 wire of the Amana to the Dehum and the Dehum to the Y1 terminal of the Honeywell EIM. The Y2 is connected to the Y in the furnace and then to the Y2 in the EIM. The blower now operates at 800 CFM in the low stage of cooling and at 1100 CFM in high stage. I did it to take advantage of the nergy savings of a 2 stage cooling system. Is this correct or is the air flow from the blower now too low.

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Phil

Consultant to Engrs, Govt & Contractors

Degree, Mech Engr Technology

 
9,514 satisfied customers
Kenmore refrigerator making clicking sound and compressor

Kenmore refrigerator making clicking sound and compressor shuts off a few mins later it does it again. I checked continuity on the 3 compressor terminals and checks out good. Relay in the black box on the compressor has continuity and the run capacitor (15 uf) checks at 14.45 uf. checked continuity on the temp control and checked out good even as I turned the knob. the off position shuts it down like its supposed to and now i'm checking the defrost timer and have continuity on the two middle terminals... I haven't checked the amp load rating while it tries to start though to see if it's on the blink?JA: Can you guesstimate how old your Kenmore is? And just to clarify, what's the exact model?Customer: hee hee 1987.JA: Do you plan on doing the work yourself?Customer: yes.JA: Anything else we should know to help you best?Customer: Just trying to track down the exact problem to see if its worth saving. I used to be a sears service tech HVAC 20 yrs ago and am rusty...JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Appliance Technician about your situation and then connect you two.

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2,724 satisfied customers
My home A/C was recently serviced and the tech said he

My home A/C was recently serviced and the tech said he couldn't get the low pressure line to "flash"? I think he said that that meant it wasn't getting cold enough? Now a rep from the company is trying to sell me a whole system. What does it mean to not flash and what causes it and what should a fix be?

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D.E. Anderson

Industrial Refrigeration Service Manager

 
222 satisfied customers
I have a 2002 RUDD URKA-A036JK10E Gas Heating/AC unit

I have a 2002 RUDD URKA-A036JK10E Gas Heating/AC unit mounted outside. Last night (outside temp was around 74), the unit kept running, but no cold air was entering the house. I shut the unit down and began to investigate.The condenser lines and base were iced over about 1/4" thick. The evaporator coils were packed with ice and not thawing (noticed when I removed the side panel to inspect) and water was not dripping out the drain.I turned off the thermostat and set the fan to "on". The blower ran and the coils immediately started thawing with moisture filling the drip pan and draining out. After several hours the coils were free of ice, so I closed up the side panel and restated the system. It appears to be working correctly, for now.I've completed previous repairs on the system myself in the past, but suspect the blower motor may not be running at capacity (and have no way of measuring output).Any suggestions?David

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Brian HVAC Guy

HVAC/R Consultant

High School

 
1,326 satisfied customers
My 1997 Trane XE 1200 TTP060100A4 (with HCFC 22) failed and

my 1997 Trane XE 1200 TTP060100A4 (with HCFC 22) failed and was replaced with a Johnston Supply RAC13J604S21 (rated at 5 tons) and a Goodman CSCF4860N6 coil (4 to 5 ton horizontal slab coil). they don't seem to cool as well as the old Trane before it failed. Why? Is it the new coolant that is required now not as good?

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Tim H.

Lead building engineer

Vocational, Technical or Trade Scho

 
4,554 satisfied customers
I have a lennox split residential unit. It is running a low

I have a lennox split residential unit.It is running a low superheat and it is not cooling well. It is a fixed orifice.I replaced the air filter, changed blower fan capacitor and even washed the evaporator. The superheat didnt change a bit.Evaporator 48.7FSuction line 51-55FCondenser 108.7FLiquid line 92FThere is a kink at the suction lineI washed the Outdoor unit

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Airheatman

Heating & Air Conditioning Contractor

6 years college

 
9,380 satisfied customers
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