Maintenance Schedule - Rheem GEN20AD-E Operator's Manual

High Oil Temperature
This service code is indicated by High Oil Temperature
scrolling across the digital display. The contacts of the
temperature switch are normally open. If the engine
temperature increases past a determinded temperature, the
service code is detected and the engine shuts down.
Common causes for this condition include running the unit
with an access doors removed, obstructed air inlet or exhaust
port, or debris in the engine compartment or running unit
with roof open.
To resolve the problem, let the engine cool down and remove
any accumulated debris and obstructions. Ensure that the
access doors are installed and the roof is closed whenever
the unit is running. If problem persists, contact your installer
or authorized dealer.
Transfer Switch Service code
This service code is indicated by Transfer Switch Service
code scrolling across the digital display (if transfer switch is
equipped with service code detection).
The most likely cause of this service code is a blown fuse
in the transfer switch. To remedy the problem, contact your
installer or an authorized dealer.
Battery Charge Circuit
This service code is indicated by Battery Charge Circuit
scrolling across the digital display. The most likely cause is
an electrical problem with the control panel. To remedy the
problem, contact your installer or an authorized dealer.
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Maintenance Schedule

Follow the hourly or calendar intervals of operation,
whichever occurs first.
First 5 Hours
Change Engine Oil
Every 8 Hours or Daily
Clean Debris
Check Engine Oil Level
Every 100 Hours or Annually
Change Air Filter
Change Engine Oil and Filter
Replace Spark Plugs
Check Valve Clearance
Check Torque of Engine End Cover Bolts
Check Circuit Breaker Torques
Annually
Clean Oil Cooler Fins
Test System Operation (Simulate a Power Outage) imulate mulate
When all engine servicing is complete, replace 15 Amp fuse rvicing is com vicing is c
in control panel and reset the exercise timer. See Setting and reset the and reset the
Exercise Time in Operation. e e e e in in Operatio Operatio
Regular maintenance will improve the performance and r maintenanc maintenan
extend life of the generator. See any authorized dealer for end life of the nd life of t
service. ervice. ervice.
Emission Emissions Control Emission
Main Maint Maintenance, replacement, or repair of the emissions
co c control devices and systems may be performed by any non-
road engine repair establishment or individual.
However, to obtain "no charge" emissions control service,
the work must be performed by a factory authorized dealer.
See the Emission Warranty.