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 TM 10-4110-262-13&P
0005 00
Initial Digital Display Test
1. Turn the unit on.
NOTE
See what appears on the digital display. This is the temperature display.
a. Normal Display (-40 to 199 F [-40 to 38 C])
b. Blank Display
c.
Erratic Display
2. Press the setpoint key and note what appears on the digital display. This is the setpoint display.
a. Normal Display (-26 to 86 F [-32 to 30 C])
b. Blank Display
c.
Erratic Display
d. No Change
3. Refer to the Display Diagnosis Chart to see what to check next.
Table 1. Display Diagnosis Chart.
Setpoint Display
Normal Display
Blank Display
Erratic Display
No Change
Temperature
Normal Display
No Problem
Faulty Controller
Faulty Controller
Faulty Controller
Display
Blank Display
Check Sensor
Check Power
Check Power
Check Power
Erratic Display
Check Sensor
Check Power
Check Power
Check Power
Selecting the Setpoint Range
The setpoint range can be set at either 26 to 86 F (-32 to 30 C) or 8 to 86 F (-22 to 30 C). Dip
switches 1 and 2, located inside the controller are used to select the setpoint range. Place dip switches 1
and 2 in the ON position for a setpoint range of 26 to 86 F (-32 to 30 C). Place dip switches 1 and 2 in
the OFF position for a setpoint range of 8 to 86 F (-22 to 30 C). To change the setpoint range
selection:
1. Remove the cover from the back of the controller.
2. Place dip switches 1 and 2 in the proper position.
a. ON for a setpoint range of 26 to 86 F (-32 to 30 C).
b. OFF for a setpoint range of 8 to 86 F (-22 to 30 C).
3. Replace the cover.
0005 00-9
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