Delta Class SLA6900 UHP & SLA6800 Series Metal Sealed MFC's/MFM's
Installation and Operation Manual
X-TMF-SLA6900-SLA6800-MFC-eng
Part Number: 541B100AAG
August, 2009
4-5
Section 4 Maintenance
& Troubleshooting
Remove the sensor connector from the PC Board for this procedure.
OHMMETER CONNECTION
RESULT IF ELECTRICALLY FUNCTIONAL
Open circuit on ohmmeter. If either heater (1) or
Pin 1 or 4 to meter body
sensor common (4) are shorted, an ohmmeter
reading will be obtained.
Pin 4 to Pin 2
Nominal 1100 ohms reading, depending on
Pin 4 to Pin 3
Pin 5 to Pin 1
Nominal 1000 ohm reading.
Pin 6 to Pin 7
Nominal ohm reading.
Table 4-2. Sensor Troubleshooting.
temperature and ohmmeter current.
SENSOR
SCHEMATIC
PIN
NO.
FUNCTION
1
Heater
Upstream
2
Temperature
Sensor (Su)
Downstream
3
Temperature
Sensor (Sd)
4
Sensor Common
5
Heater Common
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