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Mach ac is not cooling well. Compressor and fans are

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Coleman Mach ac is not...
Coleman Mach ac is not cooling well. Compressor and fans are working. Filters are clean. Reaching up in air inlet and only the very lower portion of evaporator is cold. Any ideas what to check?
Submitted: 8 months ago.Category: HVAC
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Answered in 37 minutes by:
9/13/2017
HVAC Technician: Phil, Mechanical Engineer replied 8 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 9,371
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello, if only a portion of the evaporator is cold, the system is most likely low on refrigerant (due to a leak that needs repaired).

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To check that you need a set of refrigeration service gauges and a little training.

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We can go from there without a time lmit after you rate this answer:

Select the 'finish and rate your expert link' near the top of your page and click on it.

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OPENING STATEMENTS

Important note about RATING my work:

I am a retired mechanical engineer and HVAC/electrical/ refrigeration and boiler contractor ... with 56 years in this business. The last 20 of those years consulting for major firms nationally..

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All I ask is please respect me and my input by selecting the***RATING LINK***at the top of your page, that is the only way I am credited through the site. Rating does not affect your charges nor ability to refund if not satisfied.

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If you need to be coached through a full diagnosis/repair,and wiring etc. for up to two days, and wish to be trained to use test instruments...... that goes well beyond' Just a simple Answer' of course, and goes beyond what most other experts here offer.....rate my answer so far positively.. . and I will deliver that training and coaching to you All on the same dime so to speak.

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Lacking a positive rating I can spend days helping a person at my own expense and loose my shirt, shorts and socks on the deal.

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Attach a close up photo of the wiring diagram glued to the inside of the blower access door and I will mark it up with trouble shooting instructions then follow up with step by step training and coaching until you have a solution.

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Photo must be exceedingly well focused. Use the 'add files' link next to your send button to get the photo to me.

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If you wish to accept the companies $25 phone call offer, if indeed they send you one, this will go a *lot faster, but it IS 100% optional... or we can continue here in this dialog box at no additional charge.

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Phil
Phil, Mechanical Engineer
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Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

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