Rheem Error Code A093: PCB Data Error

Severity
Warning
Type
digital display
Where to look
front panel
Estimated repair cost: $100 — $250 (parts + labor)
Warning: Your Rheem HVAC system has detected a PCB data error, which requires professional attention to prevent further damage.

How to Fix Rheem Code A093

  1. Step 1: Turn off your HVAC system at the thermostat and the main power switch.
  2. Step 2: Contact a professional HVAC technician to diagnose and repair the issue.
  3. Step 3: Do not attempt to reset the system or perform any repairs yourself, as this could cause further damage or create a safety hazard.

How to Reset Rheem Code A093

  1. Turn off the unit using the power button on the front panel.
  2. Turn off the gas supply valve.
  3. Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
  4. Restore power at the breaker, then open the gas valve.
  5. Turn the unit back on. If the error returns, the underlying issue needs repair.

What does A093 mean?

The A093 error code on your Rheem HVAC system indicates a problem with the data being read from the printed circuit board (PCB). This could be due to a faulty sensor, a broken wire, or a problem with the PCB itself. The system has locked out to prevent any further issues, and you'll need to reset it after the problem has been fixed.

Affected Models

Replacement Parts

PartOEM NumberEst. Cost
Temperature Sensor RHEEM-123456 —
Pressure Sensor RHEEM-654321 —

Related Codes on Same Models

CodeDescriptionSeverity
A001 Ignition Failure Warning
A003 Abnormal Ignition Warning
A004 False Flame Detection Warning
A008 Exhaust Temperature High Warning
A011 No Flame Detected Warning
A021 Over-Temperature Warning
A031 Inlet Thermistor Open/Short Warning
A041 Outlet Thermistor Open/Short Warning
A043 Water Level Error Warning
A051 Fan Motor Abnormality Warning