Chromalox 2110 Instruction Manual - Page 19

Browse online or download pdf Instruction Manual for Temperature Controller Chromalox 2110. Chromalox 2110 20 pages.

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9. Troubleshooting

The following Troubleshooting Guide offers simple so-

lutions to common problems and explains the 2110's

Error Messages. Review this section for a possible so-

lution to your problem before contacting Chromalox.

Symptom

Power applied, display

does not light, and con-

troller does not function

Display alternates

between HI and SENS,

2110 disables control

output

Process does not heat

Erratic operation

Process not in control

Instrument continually

goes through power-up

reset

Probable Cause

1. No power applied

2. External fuse open

1. Open sensor

2. Out of calibration

1. No power being applied to the load

2. Load fuse open

1. Intermittent sensor connections

2. Controller failure (internal electronics)

3. External electrical noise

1. Incorrect settings

2. Thermocouple Wiring

1. Severe electrical noise

Note: For each symptom, perform correction steps in

the order listed.

1. Check power wiring and fusing

2. Power down and repower up

1. Check sensor wiring

2. Check selection switches

3. To verify that controller is at fault, re-

move the thermocouple and place a

jumper across the sensor terminals

of the 2110. If the display reads ap-

proximately ambient, then the sensor is

open. Replace the thermocouple.

4. See Section 7–Calibration

1. Verify Load LED is ON

2. Verify the heater or fuse is not open

3. Verify output limit is set to 100%

4. Verify set point is greater than process

temperature

5. Verify output wiring

1. Check sensor wiring or substitute sen-

sor simulator

2. Power down and repower up

3. Contact Chromalox

1. Check Proportional Band setting and

Automatic Reset setting

2. Check thermocouple polarity

1. Separate sensor wiring from other wir-

ing

2. Apply power line filter

3. Contact Chromalox

Correction Steps