Rheem Guardian PowerVent - How to Replace the Guardian Power Vent Electronic Control Module

Guardian PowerVent Training Manual SVC900; Rev 1
Page 40
HOW TO REPLACE THE GUARDIAN POWERVENT ELECTRONIC CONTROL MODULE
1. Turn the unit off and unplug the
heater. If not, you could be shocked
with 120 volts of electricity.
2. Turn the gas valve to OFF Remove
plastic grey cover to the Molex
connections
3. Disconnect all wiring and Molex
connectors from the gas valve.
4. Using a TORX 15 tamper resistant
screwdriver, remove the single screw
on the grey control module housing.
Keep the screw.
5. Using a flat tip screwdriver, gently
pry the retaining tabs holding the
control module in place. There are
four tabs; One on top; one on bottom;
and two on the left side of the valve