Lockout Check List - Rinnai RHFE-551FA Service Manual

Lock Out Checklist
1. Check gas pressure at manifold, pressure should be:
___ 9.4" W.C. for RHFE 551 FA on propane.
___ 3.5" W.C. for RHFE 551 FA on natural.
___ 10.5" W.C. for RHFE 1001 FA/VA on propane
___ 3.8" W.C. for RHFE 1001FA/VA on natural
2. Check air shutters adjustment:
___ RHFE 551 FA set for propane should have seven notches showing on adjustment rod.
___ RHFE 551 FA for natural should have two notches showing on adjustment rod
___ RHFE 1001 FA/VA set for propane should have no notches showing on rod.
___ RHFE 1001 FA/VA set for natural should have 5 notches showing on the back two burners and 3 notches
showing on the front right burner.
3. Ensure unit has the proper size orifices in it:
___Orifice sizes for the RHFE 551 FA on propane should be 1.00mm (0.039")
___Orifice sizes for the RHFE 551 FA on natural should be 1.70mm (0.067")
___Orifice sizes for the RHFE 1001 FA/VA on propane should be 1.05mm (o.041") on
the back two burners and 1.15mm (0.045") on the front right burner.
___Orifices sizes for the RHFE 1001FA/VA on natural should be 1.9mm (0.074") on the back two burners and
1.80 mm(0.071") on the right front burner.
4. On the RHFE 551 FA's ONLY, ensure the proper size bypass restrictor screw is in place:
___Propane restrictor screw size is 1.15mm.
___Natural restrictor screw size is 3.55mm.
5. Inspect wall vent to ensure it is not clogged or restricted in any way. For proper inspection of combustion
chamber air way, vent MUST be removed from wall.
6. Remove all flame rods and electrodes and inspect for cracks and/or carbon buildup. Clean flame rods and
electrode with some type sandpaper. Also check electrode for proper gap setting (0.12" - 0.16").
7. Check all wire connections for loose or broken pins or connectors. Disconnect electrical power before
performing this task.
8. Check resistance on all three gas valve solenoids. Unplug each coil before checking resistance. Set you meter
on the 2K scale, you should read somewhere between 1000 to 1800 ohms across each coil. Power unit back
up and set your meter to read 100 VDC scale, cycle unit and check voltage to each coil. You should read
90VDC at each coil. If unit goes to lockout before you have time to read all coils, you may have to cycle it two
or three times.
9. Check voltage on the (4) pin or (6) pin connector located on the front of the PC board. See below for proper
voltages and wire colors per unit.
___ All RHFE 551 FA's Have a four pin connector with two yellow wires and two white wires. Set meter to read
220 VAC, then insert meter leads into connector. Across the two yellow wires you should read 220 VAC,
and 15 VAC across the two white wires.
___ All RHFE 1001 FA's have a four pin connector with two yellow wires and two white wires. Set meter to
read 220 VAC, then insert meter leads into connector. Across the two yellow wires you should read 220
VAC, and 15 VAC across the two white wires.
___ All RHFE 1001FA/VA's have a six pin connector with two yellow wires, two white wires, and two red wires.
Set meter to read 220 VAC, Then insert meter leads into connector. Across the two yellow wires you
should read 220 VAC, across the two white wires 15 VAC, and 100 VAC across the two red wires.
Rinnai Direct Vent Service Manual
RHFE-551FA
RHFE-1001FA
RHFE-1001FA/VA
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