Low pressure trip. The control elevates this to fault 83 after 3 occurrences. Reset time is 6 minutes. The manual's example of the flash pattern is 3 short and 2 long for code 32, and Table 6 calls that low pressure switch open.
Homeowner part this code names: AC coil cleaner.
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Bryant outdoor 32 is a low pressure trip, not the high-pressure switch. It elevates to fault 83 after 3 occurrences. Reset time is 6 minutes. Table 6 says to use the fault 83 checks: a closed service valve, low charge, low indoor airflow in cooling, low outdoor airflow in heating, and a restriction in the filter drier or expansion device. Code 31 is the high-pressure switch. Furnace code 32 is the furnace low-heat pressure switch.
Same characters, different appliance: Bryant 32 on a furnace is a different fault. Bryant furnace 32.
Likely causes
- The service manual points code 32 at the fault 83 cause list
- Service valve left closed
- Undercharged system
- Indoor airflow too low in cooling, or outdoor airflow too low in heating
- Restriction in the filter drier, expansion device, circuits, or tubing
Safe checks for 32
- In cooling, with power off, check the indoor coil for ice or debris. Also look at the outdoor coil for ice or debris
- Technicianfollow the fault 83 table for charge, service valves, the EXV or TXV, and the filter drier
Capacitors can hold a charge after the power is off. Safety terms.
When to call a pro
Call a licensed HVAC technician if 32 repeats or becomes the 4-hour lockout 83. Do not add refrigerant.
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Parts & tools for this fix
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AC and heat pump coil cleaning supplies: guide
In this code: In cooling, with power off, check the indoor coil for ice or debris. Also look at the outdoor coil for ice or debris
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