What HS Means
Frigidaire's room air conditioner code guide lists HS as a failed air discharge thermistor, the sensor that reads the temperature of air leaving the unit.
Common Causes of HS
- Failed air discharge thermistor
- Damaged sensor wiring
- Control board fault
🔧 One Safe Check You Can Try
Turn the air conditioner off and unplug it for about 30 seconds. Restore power and run it in cool mode. If HS reappears, switch it off and book service.
⚠ Why You Shouldn't Go Further Than That
- The sensor is located inside the unit behind panels near the blower and live wiring.
- Incorrect sensor replacement can cause the unit to freeze or overheat.
- Damage caused during a repair attempt may not be covered by your warranty — check your warranty terms first.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.