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Brian HVAC Guy
Brian HVAC Guy, HVAC Technician
Category: HVAC
Satisfied Customers: 953
Experience:  I have been an HVAC/R mechanic/technician for 30+ years.
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My ac has iced coils, turned a/c off and fan on to melt ice.

Customer Question

my ac has iced coils, turned a/c off and fan on to melt ice. why would it ice?
JA: What's the make and model? And can you guesstimate how old it is?
Customer: rheem RBHP - 17J06SH1
JA: Do you plan on doing the work yourself?
Customer: if possible
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 HVAC Technician about your situation and then connect you two.
Submitted: 1 year ago.
Category: HVAC
Expert:  Brian HVAC Guy replied 1 year ago.

Hi Tree, I'm Brian and I can help with this!

AC systems ice for one of three reasons:

1) Low/no airflow across the cooling coil (evaporator)

2) Low refrigerant in the system

3) Operation in ambient temperatures below standard operation conditions without the means to adjust for them.

Now the first one, low air flow, can be caused by a MULTITUDE of issues. Duct problems, dirty evaporator coil, dirty air filter, dirty blower wheel or a failing blower motor or capacitor. The order I have above shows the issues in their most common order of cause.

Let me know if you want me to help you narrow this down. There are some simple steps we can perform to narrow down the issue.