2008T Troubleshooting Guide
P/N 490292 Rev. A
T- 1.0.8 ISOLATE TEMPERATURE PROBLEM
a) Watch [Temperature] for one (1) minute. If UNSTABLE i.e. changes more than 0.2° C watch for three
(3) more minutes BEFORE continuing to part b. If STABLE i.e. does NOT change more than 0.2° C see
part b.
b) FOUR (4) possible scenarios 1) or 2) or 3) or 4) below:
1)
IF (and ONLY if) unstable AND, at least once, becomes more than 38.9° C: Proceed
to page 256, procedure number T- 1.3.0.
2)
IF (and ONLY if) STABLE between 35.1 and 38.9° C: Figure
right. is the [Temperature] window pale yellow / white OR red?
• IF (and ONLY if) pale yellow / white! Proceed to page 243, procedure number T- 1.0.130.
• IF RED! See procedure number T- 1.0.9 (page 240)
3)
IF (and ONLY if) unstable and falls to OR remains less than 35.1° C: Proceed to
page 245, procedure number T- 1.0.142.
4)
IF UNSTABLE BUT remains more than or goes to 35.1° C BUT IS NEVER more than
38.9° C: Proceed to page 247, procedure number T- 1.0.155.
T- 1.0.9 [TEMPERATURE] BETWEEN 35.1 AND 38.9 BUT ITS WINDOW IS STILL RED
a) Figure right, at the distribution board, ENSURE position #4
(“PH-PR”) is VACANT.
b) ENSURE Cond Cell #7 is plugged into position “X7, COND”!
c) Figure right, the FOUR-RESISTOR
SET is required.
d) Enter Service Mode → Calibrate
Sensors → Temp Sensor
e) Proceed to STEP #1 (page 240).
STEP #1
a) The screen should say “Connect a 6.808 K ohm resistor…”.
b) Per the Figure (above, right), avoiding VACANT position #4, place the 34° C (6.808 KΩ) plug, from the
FOUR-RESISTOR SET, into the
2
nd
distribution board position from the left, “MON-NTC”.
c) Is the screen’s [Pre-Temperature Reference] between 64 and 76 (Yes or No)?
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