4 flashes
Easy Fix
Rheem · HVAC Systems & Water Heaters
High Heat Call Satisfied
Quick Answer
Error code 4 flashes on your Rheem HVAC Systems & Water Heaters means: High Heat Call Satisfied. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Verify the thermostat indicates the setpoint has been satisfied
2
Confirm the furnace transitions through its normal shutdown sequence
3
No action required for normal cycle completion
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
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