Rinnai E- Series Troubleshooting Manual page 42

WARNING: Turn off power and water supply to the boiler before removing or installing any parts. If checking
gas pressures you MUST be qualified gas technician to service the gas system on this appliance.
No parameters present. Meaning the E-Prom has no
program or is blank. Replace E-Prom or display (Model
dependent).
If this error is displayed, there is no software on the
MCBA or display/EPROM. A RINNAI conversion kit
specific for the boiler model and fuel type must be
installed. Follow the conversion kit instructions to
load the software to the MCBA.
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