Houghton Air Conditioner: “E5”
warning RV air conditioner error codes
What it means
The outdoor (condenser) coil temperature is reading too high, so the unit shuts down or limits operation to protect the compressor from overheating.
Most likely causes
- Blocked or dirty condenser coil restricting airflow most likely
- Very high ambient temperature combined with continuous heavy load common
- Condenser fan not running properly common
- Outdoor coil temperature sensor reading incorrectly less common
Safe checks you can do yourself
- With power off, check the rooftop unit's condenser coil and shroud for leaves, dust, or debris and clean gently.
- Make sure the rooftop shroud is fitted and air intake/exhaust are not blocked.
- Let the unit cool down and restart during cooler conditions to confirm whether the code returns.
How to reset / clear E5
- Switch the unit off and let it sit (ideally until the rooftop unit has cooled).
- Cut power at the breaker for about a minute, then restore power and restart.
When to call a technician
If the coil is clean, the fan runs, and E5 still appears, have a technician check the condenser fan motor, refrigerant charge, and outdoor coil sensor.
Applies to
Houghton Belaire 3400 · Houghton Belaire 3500 · Houghton Belaire 3800 · Houghton Belaire series rooftop AC
FAQ
What does Houghton Air Conditioner code "E5" mean?
The outdoor (condenser) coil temperature is reading too high, so the unit shuts down or limits operation to protect the compressor from overheating.
How do I reset Houghton Air Conditioner E5?
Switch the unit off and let it sit (ideally until the rooftop unit has cooled). Cut power at the breaker for about a minute, then restore power and restart.
What is the most common cause of E5 on a Houghton Air Conditioner?
The most likely cause is blocked or dirty condenser coil restricting airflow.
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Sources
- E5 Error: Houghton Belaire 3800 AC Troubleshooting Guide — E5 outdoor coil temperature too high (JustAnswer)
- RP-AC3501 / RP-AC3800 Ducted AC Owner's Manual — Outdoor coil temperature too high E5 (RecPro)
Note: Belaire 3800 field reports also describe E5 alongside no-cool symptoms; the manual table defines it as outdoor coil over-temperature.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.