Replacement Parts List

Parts for First Generation RTG-42PV Series (out of production)
Rheem Part # Description RTG-42PV
RTG20000BC Control Board ●
RTG20000BB Transformer (120v to 100v) ●
RTG20000BJ Transformer (Power Supply) ●
RTG20074EE Power Line Fuse (3A) ●
RTG20000Z Fuse Board Assembly ●
RTG20000AE Gas Valve - LP ●
RTG20000AF Gas Valve - Natural ●
RTG20000AW
Gas Inlet Connector ½”
●
RTG20000AS Burner Assembly ●
RTG20000AP Burner Manifold - LP ●
RTG20000AR Burner Manifold - Natural ●
RTG20000BF Igniter Coil ●
RTG20000S High Limit Switch ●
RTG20000X Flame Rod ●
RTG20000AH Fan Assembly with Board ●
RTG20000BG Water Control Valve ●
RTG20006AS Inlet Water Filter ●
RTG20000AD Bypass Pipe ●
RTG20000AX Water Bypass ●
RTG20000T Heat Exchanger Thermistor - Yellow ●
RTG20000U Outlet Thermistor - Black ●
RTG20000V Inlet Thermistor - White ●
RTG20000BA Cold Inlet Connector ●
RTG20000AY Drain Plug ●
RTG20000AZ Hot Outlet Connector ●
RTG20000AB Door Filter Screen ●
RTG20006CK Door Switch ●
RTG20000AU Display Board ●
RTG20000AV Display Control Board ●
RTG20000BK Air Flow Switch ●
RTG20186 Replacement Screw Kit ●
RTG20206 Replacement O-Ring Kit ●
Sea-Level Program Chip
Rheem Part # Description RTG-42PV
RTG20000BD Program Chip - 0-3280 NAT ●
RTG20000BE Program Chip - 0-3280 LP ●
High Altitude Program Chips - 3281 - 6560 Feet
Rheem Part # Description RTG-42PV
RTG20000AK Program Chip - 3281-6560 NAT ●
RTG20000AJ Program Chip - 3281-6560 LP ●
Ultra High Altitude Program Chips - 6560 - 9840 Feet
Rheem Part # Description RTG-42PV
RTG20000AM Program Chip - 6560-9840 NAT ●
RTG20000AL Program Chip - 6560-9840 LP ●
+
~
-
~
FUSE
3A (240V)
ON
1
2
3
4
°F
TEMP ADJUSTMENT
ON/OFF
IN USE
POWER
(ON/OFF)
42 | for Rheem, Ruud, Rheem-Ruud, Richmond, EcoSense and Paloma tankless water heaters