Page 12
Part No. XG0512
Rio DX Cast Stove
Maintenance
Troubleshooting
If your fireplace still does not operate correctly, consult your dealer or
the manufacturer.
All service and repairs should be performed by a qualified
agency.
All spare parts, optional fans (see optional fan instruction guide), and
optional trim finishes are available from the manufacturer or your local
dealer.
Pilot Burner Adjustment
1.
Locate Pilot Adjustment Screw.
(See figure 28.)
2.
Adjust pilot screw to provide properly sized flame as shown in
figure 29).
3.
After installing or servicing, leak test with a soap solution with
main burner on. Coat pipe and tubing joints, gasket etc. with soap
solution. Bubbles indicate leaks. Tighten any areas where the
bubbles appear until the bubbling stops completely.
Figure 29.
Pilot Burner
Troubleshooting
The following is a troubleshooting chart of possible problems:
PROBLEM
CORRECTIVE ACTION
Noisy Pilot Flame
Locate pilot adjustement screw on gas
control valve. Flame is decreased by
turning adjustment screw clockwise.
Pilot won’t ignite
Disconnect remote wires and try to
light pilot. If pilot now works, remote
connections are faulty. Check wiring
diagram
figure
28
.
Main burner will
1. Check wiring (
see figure 28
).
not light
2. Check wall switch for proper con-
nection.
Gas Control Valve
Figure 17.
Honeywell VS8520
valve
.
TH
On/Off Switch
Power Generator
TP
TH-TP
-
Turn Gas Supply Of
f
- Set thermostat to
call for heat
SV9500 / SV9600
is powered
(24V
AC nominal)
HSI
T
erminals
NOTE:
Before T
roubleshooting, Familiarize
Y
ourself With
The Startup
A
nd Checkout Procedure.
START
HONEYWELL SV9500 /9600
Tr
oublshooting Sequence
INSET
NO
CHECK:
- Line voltage power
- Low voltage transformer
- Limit Controller
-
Thermostat
- Wiring
-
Air proving switch on
combustion air blower system
-V
ent damper (if used) is open
and end switch made
NO
NO
YES
NO
YES
Unplug Pilot Burner Cable,
Measure Voltage at
SV9500/SV9600 HSI
T
erminals (24V
AC
Nominal, see INSET)
Replace
SV9500/
SV9600
Igniter warms up and
glows red.
YES
YES
NO
YES
NO
Pilot
Va
lve opens.
Replace Igniter /
Flame Rod Assembl
y
Replace SV9500/SV9600
NO
NO
YES
YES
Turn gas on.
Pilot Burner Lights?
Main Valve opens?
SYSTEM O
K
Discard old Igniter /
Flame Rod Assembl
y
Measure
Vo
lume to
SV9500 / SV9600 Vo
ltage
must be at least 19.5
VAC
Check
Tr
ansformer
Line Vo
lt
Suppl
y
Replace Igniter /
Flame Rod Assembl
y
Replace
SV9500 /
SV9600.
Save old
Igniter/ Flame
Rod
Assembl
y
for service.
Replace Igniter / Flame
Rod
Assembly and retain.
Restart troubleshooting
Sequence. Does main
valve open?
