Rheem RTGH-RH10DV - Chapter 5 Replacement Instructions; Circuit Board

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1.Closethegasshuto󰘯valveandwatervalve.
2.Turnthepoweron.
3.Enter'InstallerMode','StatusMode'fromcontrol
panel.(Seepage44,45)
4.Onapieceofpaper,writedownthefactorysettingsin
the'InstallerMode'for4:FH,5:FL,'StatusMode'J:AG.
ThesenumbersMUSTberecordedbeforetheoldcircuit
boardisremoved,thevalvesarespeci󰘰ctotheunit.
5.Turnthepowero󰘯waterheater.(Usethemanual
switch)
6.UnplugconnectorsonCircuitboard.
7.LoosentwoscrewstoremoveCircuitboard.
8.Removethecircuitboardandreplacewithnewcircuitboard.
9.Reconnectallwireconnectionstothenewcircuitboard.
10.Verifythedipswitchsettingsarecorrectonthe
newcircuitboard.(Seenormal󰘰rein󰘰gurebelow)
11.Openthegasshuto󰘯valve.
12.Openallwatervalves.
13.Turnthepoweron.(Usethemanualswitch)
14.Enter’InstallerMode’,'StatusMode'fromcontrol
panel.
15.Setthevaluesfor 4:FH,5:FL,J:AG.
(ThesearethenumbersyouwrotedowninStep4)
16.Savethevaluesfor4:FH,5:FL,J:AG.
17.Turntheunitonandensureproperoperation.
18.Testoperation.
Ifcarbondioxideandmanifoldpressurevalues
arematchedwithTable1inthelow󰘰recombustion,
switchdipswitchfromlowtohigh󰘰reandcheck
carbondioxideandmanifoldpressurevalues.Ifthe
valuesarematchedwithTable1,shuto󰘯theunitand
closethegasvalve.Thendisconnectthehosethatis
connectedtothemanifoldpressureport,thentighten
thescrewforthemanifoldpressureport,andreturn
thedipswitchbacktonormalcondition.Finally,close
thefrontcover.
NOTE
Whenassembleconnector,checkwiringcolor
andlocationstoavoidanymistakes.
Dip Switch State
5 Gas Type NG : ON LP:OFF
6 High Fire 6: ON 7: OFF
7 Low Fire 6: OFF 7: ON
6, 7 Normal Fire 6: OFF 7: OFF
Manifold
pressure
(±0.01˝)
'LP'type 'NG'type
2˝VENT 3˝VENT 2˝VENT 3˝VENT
199,000
Btu/hr
High
󰘰re
-0.3" W.C -0.25" W.C -0.38" W.C -0.33" W.C
Low
󰘰re
-0.02" W.C -0.02" W.C -0.07" W.C -0.07" W.C
180,000
Btu/hr
High
󰘰re
-0.28 " W.C -0.23 " W.C -0.36 " W.C -0.31" W.C
Low
󰘰re
-0.02" W.C -0.02" W.C -0.07" W.C -0.07" W.C
Table 1
MaincomponentsReplacementInstructions
Chapter5ReplacementInstructions
1.CircuitBoard
Fire
199,000Btu
(LP)
180,000Btu
(LP)
199,000Btu
(NG)
180,000Btu
(NG)
High
Fire
Low
Fire
Normal
Fire