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HWDF-Series Gas Fireplace
Part No. XG0190 - 071409
Gas Control Valve
Pilot Burner Adjustment
1.
Locate Pilot Adjustment Screw.
(See figure 34.)
2.
Adjust pilot screw to provide properly sized flame as shown in
figure 34).
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 34.
Pilot Burner.
Troubleshooting
The following is a troubleshooting chart of possible problems:
PROBLEM
CORRECTIVE ACTION
Noisy Pilot Flame
Locate pilot adjustment 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
30.
Main burner will
1. Check wiring (
see figure 30
).
not light
2. Check wall switch for proper
connection.
HW38-DF
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, and optional trim finishes are available
from your local dealer or the manufacturer.
HW38-DF-I
Figure 33.
Sit Nova 820 gas valve
.
Manifold Pressure
Test Connection
Pilot Adjustment Screw
Inlet
Pressure
Power
Generator
Wall Switch
Spill Switch
- Turn Gas Supply Off
- Set thermostat to
call for heat
SV9500 / SV9600
is powered
(24VAC nominal
)
HSI
Terminals
NOTE:
Before Troubleshooting, Familiarize Yourself With
The Startup And Checkout Procedure.
START
HONEYWELL SV9500 /9600
Troublshooting 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
Terminals (24VAC
Nominal, see INSET)
Replace
SV9500/
SV9600
Igniter warms up and
glows red.
YES
YES
NO
YES
NO
Pilot Valve opens.
Replace Igniter /
Flame Rod Assembly
Replace SV9500/SV9600
NO
NO
YES
YES
Turn gas on.
Pilot Burner Lights?
Main Valve opens?
SYSTEM OK
Discard old Igniter /
Flame Rod Assembly
Measure Volume to
SV9500 / SV9600 Voltage
must be at least 19.5 VAC
Check
Transformer
Line Volt
Supply
Replace Igniter /
Flame Rod Assembly
Replace
SV9500 /
SV9600.
Save old
Igniter/ Flame
Rod Assembly
for service.
Replace Igniter / Flame
Rod Assembly and retain.
Restart troubleshooting
Sequence. Does main
valve open?
Maintenance
