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IGNITOR LOCATION
Figure 3
HIGH VOLTAGE CABLE
Fenwal Part Number 05-129608-624 Suppression Cable
(or equivalent) must be used for proper operation of control.
FAULT CONDITIONS
ERROR MODE
Internal Control Failure
Flame with No Call for Heat
Ignition Lockout
The LED will flash on for 1/4 seconds, then off for 1/4 second
during a fault condition, the pause between fault codes is
3 seconds.
WIRING DIAGRAM
www.fenwalcontrols.com
LED INDICATION
Steady on
2 flashes
3 flashes
1-800-FENWAL-1
FLAME CURRENT CHECK
Flame current is the current which passes through the flame from
the sensor to ground. The minimum flame current necessary to keep
the system from lockout is .7 microamps. To measure flame current,
connect an analog DC microammeter to the FC - FC+ terminals.
Meter should read .7 uA or higher. If the meter reads below "0" on
scale, meter leads are reversed. Disconnect power and reconnect
meter leads for proper polarity.
TROUBLESHOOTING GUIDE
SYMPTOMS
1.Dead
2. Thermostat on- no spark
3. Valve on, no spark
4. Spark on, no valve
5. Flame okay during TFI,
no flame sense (after TFI)
6. Flame with no call for heat
Series 35-62, 24 VAC Dual Point DSI Control
RECOMMENDED ACTIONS
A. Miswired
B. Transformer bad
C. Fuse/Circuit breaker bad
D. Bad control (check LED for steady on)
A. Miswired
B. Bad t'stat no voltage@ terminal W
A. Shorted electrode
B. Open HV cable
C. Miswired
D. Bad control
A. Valve coil open
B. Open valve wire
C. Bad control (check voltage
between V1 & V2)
A. Bad electrode
B. Bad S1 or HV wire
C. Poor ground at burner
D. Poor flame (check flame current)
A. Stuck valve (check LED for 2 flashes)
Page 3
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