GE LTC MAP Manual De Usuario
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5-2
Section 5: Troubleshooting Procedures
February 3, 2000
70055MP Revision D
Table 5-1: Common Troubleshooting Procedures (Cont’d)
Condition
Possible Cause(s)
Corrective Action
Incorrect Tap Position
Displayed/Recorded.
Sensor Input and Sensor Common
connections reversed.
Battery supply for OEM resistor string
not stable or floating to ground
causing a ground loop.
Disconnect inputs and test voltage on the wires
with a volt meter referenced to earth ground.
Disconnect inputs and test voltage on the wires
with a volt meter referenced to earth ground.
Cut or remove the strap for Sensor Common input
to chassis ground connection on the circuit
board.
Use a DC voltage from the monitor, rather than a
battery, to supply the OEM resistor string.
Heater ON at ambient over
60 ºF (15.5 ºC).
Faulty heater.
Disconnect heater from I/O board; contact Reuter-
Stokes, Inc..
Heater not ON at ambient under 50 ºF
(10 ºC).
Faulty connections.
Check heater connections.