Form #43219000
May 2021
TO CHECK FLAME SENSOR CIRCUIT
(Fenwal #35-6087D1-038 module only)
The flame current is the current that passes through the flame from the sensor to the ground. The
minimum flame current necessary to keep the system from lockout is 0.7 micro-amps.
a.
To measure the flame current, connect an analog DC micro-ammeter to the FC- and FC+ terminals per
diagram. The meter should read 0.7 micro-amps or higher when the burner is running full on.
b.
If the meter reads below zero, the meter leads are reversed. Disconnect power and reconnect the meter
leads for proper polarity.
c.
Remove micro-ammeter. Return system to normal operation.
17) REPLACING PARTS
Ensure that at all times when parts are being replaced, both gas and electrical supplies are disconnected.
Various parts are available from the factory for replacement by a licensed person. Refer to the Replacement
Parts Guide in Section 19 for all replacement parts.
18) INSTALLATION DATA
Date of
Installation:
Number of
Heaters in System:
Heater Serial Number:
Heater Model:
RSCA
—
N=Natural Gas
L=Propane Gas
Summary of Contents for RSCA Series
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