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Rheem water heater error 99
Blocked exhaust. The vent is blocked or the heat exchanger is restricted.
Serious · you can check this yourself
99
Meaning: Blocked exhaust
What causes 99
The vent is blocked or the heat exchanger is restricted.
What to do
Check the vent outside. If it is clear, call a technician.
Can I fix it myself?
You can make the first check yourself, but stop there: this code can point to a serious fault.
If the code comes back
Book a visit and add the code to the booking. A technician arrives knowing which parts to bring, diagnoses the water heater for a flat $89 and gives you an exact quote before doing any work.
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