Vistaflame VF 170B Technical Manual page 20

Poor Quality Fuel – Insufficient energy in the fuel to produce enough heat to keep the stove burning
Exhaust Temperature Sensor failure. – Bypass sensor located on Exhaust Blower, if stove now operates
properly, the unit may require cleaning or a new sensor. Contact your local dealer for service.
Check the fuse on the circuit board.
3. The exhaust motor will not function normally.
Open the access panels; check all connections against the wiring diagram.
Check the Exhaust Blower voltage across the blower motor wires (>=115V on #5 setting and >= 75V
on #1 setting). – Replace the Circuit Board if the Voltage reading is less than 75 V. with a line voltage
of >115 V AC..
Clean all exhaust passages and venting.
4. Light # 3 on Heat output bar flashing
(The Exhaust Temp. Switch contacts have opened.)
Stove ran out of fuel - check fuel level in the hopper
Severe negative pressure in area where unit is installed - Check the operation by opening a window,
does this solve the problem? If it does, install fresh air intake to unit or room. Venting system may
require vertical section to move termination into a low pressure zone.
See sections #2 "Stove will not operate when hot", #3 "The Exhaust motor will not function normally"
and #5 "Auger light flashes....turn at all." for more suggestions.
To reset Circuit Board after a trouble code - push the ON/OFF button
5. Auger light flashes but auger motor does not turn at all.
Check the Door and Ash Pan door - THEY MUST BE CLOSED TIGHT.
If the Auger gear box does not turn but the motor's armature does try to spin, then the auger is
jammed. – Try to break apart jam by poking at the jam through the drop tube. If this fails then empty
the hopper and remove the Auger Cover **Remember to re-seal the cover after installation**
Auger stopped running. Pinch, break or blockage in Vacuum Hose - Check hose for pinch points or
damage, replace or re-route as required. Blow out Vacuum Hose
Damage to wires between Circuit Board and Vacuum Switch and Auger Motor - Inspect wires and
connectors
Vacuum Switch failure - Bypass the vacuum switch, if this corrects the problem check for above
problems before replacing the Vacuum Switch.
Blocked exhaust / venting system - Have stove and venting cleaned and inspected.
Check Vacuum levels at the Vacuum Switch, with a Magnahelic Gauge (readings must be above .07"
W.C. on low fire).
6. The 200 °F ( 93 °C) high limit temperature sensor has tripped.
Reset sensor and determine cause – was it Convection Blower failure or Circuit board control
problems.
Check the fuse on the circuit board.
20
Troubleshooting