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My uni is not cooling,went outside to check and fan blades…

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my uni is not cooling,went...
my uni is not cooling,went outside to check and fan blades are not turning I can hear a hum
Submitted: 3 years ago.Category: HVAC
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Answered in 6 minutes by:
7/29/2015
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 23,171
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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hello,
while it is humming, and if you spin the fan blade, does it start
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Customer reply replied 3 years ago
i have not tried that
will I have to take the cover off
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
no..just reach in with something thin
ruler. stick etc
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Customer reply replied 3 years ago
nothing happens
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
there are 2 pipes leaving the unit...feel them..is there any temp difference?
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Customer reply replied 3 years ago
no they both feel barely cool
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
ok the humming is likely the contactor pulled in.
You could have tripped breaker
Blown fuse in disconnect
Bad contactor
It would require a meter to check for 240v
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Customer reply replied 3 years ago
do i need to turn the unit off
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 3 years ago
Yes...until it can checked with a meter for proper power
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