SYMPTOM POSSIBLE CAUSE
A. No Gas Flow 1. Modulating valve improperly installed.
B. Continuous Low Fire (electronics problem). 2. Short circuit or no voltage to the ampli er.
3. Open circuit in TD114. Remote Temperature Selector circuit or wiring.
4. Short circuit in TS114, Discharge Air Sensor circuit or wiring.
5. Faulty ampli er.
C. Continuous Low Fire (electronics ok) 6. Short circuit or open circuit in Modulator Coil.
7. Plunger missing, jammed or improperly installed.
D. Incorrect Minimum Fire Erratic or Pulsating Flame. 8. Incorrect by-pass metering valve adjustment.
9. Excessive negative burner pressure.
E. Continuous High Fire (electronics problem). 10. Short circuit in TD114 Remote Temperature Selector circuit or wiring.
11. Open circuit in TS114/TS10765. Discharge or Inlet Air Sensor Circuit or wirin
12. Jumper not connected across ampli er terminals 2 and 3.
F. Continuous High Fire (electronics ok). 13. Foreign object holding valve open.
14. Plunger jammed.
G. Incorrect Maximum Fire. 15. Inlet pressure too low.
16. Incorrect outlet pressure adjustment of Pressure Regulator.
H. Erratic or Pulsating Flame. 17. Hunting
18. Erratic air patterns or improper TS114 location.
19. Wiring is run next to high voltage switching circuits causing induced voltages
20. Faulty Ampli er or erratic voltage supply.
I. Incorrect Discharge Air Temperature 21. Inlet Air Sensor is used.
22. Incorrect Wiring.
23. System out of calibration.
24. Improper TS114 location.
25. Room Override Thermostat circuit closed.
J. Burned out Transformer. 26. Short circuit in modulator coil.
27. Short circuit between ampli er and modulator valve.
K. Discharge Air Temperature too Low when T115 is Opera-
tive
28. Too low an Override Temperature setting.
29. Burner capacity may be insufficient.
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