32
Moderate
Carrier · Central Air Conditioners & Furnaces
Limit Circuit Fault
Quick Answer
Error code 32 on your Carrier Central Air Conditioners & Furnaces means: Limit Circuit Fault. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Check and replace the air filter
2
Verify all supply and return registers are open
3
Measure blower motor amperage and compare to nameplate rating
4
Test blower motor run capacitor with a multimeter (should be within 5% of rated microfarads)
5
Check temperature rise across the heat exchanger (should match nameplate range)
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Air filter
Blower motor run capacitor
High-limit switch
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