Bacharach H25-IR Operation & Maintenance Manual page 66

Specifications
H25 IR FAULT CODE TROUBLE SHOOTER
4000 ZERO VOLT ERROR
Indicated the sensor voltage stored during
auto or manual zero was less that
3.9V or greater than 4.5V
Sensor voltage is zero
Or near zero
YES
IR Emitter resistance
Show **.* in diagnostic
Emitter screen
YES
Emitter cable loose
Or disconnected
8000 A/D CLIPPING ERROR
Indicates the sensor output
voltage is greater than 4.55V
Was new optical sensor
Just installed
YES
Adjust Emitter power in diaganostic/
IR Emitter screen, per instructions
With new sensor
Adjust sensor voltage with digipot in
Factory menu to 4.2V ±0.05V
Store new "factory" cal
60
NO
Adjust sensor voltage with digipot in
Factory menu to 4.2V ±0.05V
NO
Detector cable loose
Or disconnected
YES
Reconnect cable and readjust digipot
In factory menu
NO
IR Emitter burned out, replace Optical sensor assembly, reset
digipot,re-cal box temp sensor and store new Factory calibration
YES
Reconnect cable and readjust digipot
In factory menu
H25 IR FAULT CODE TROUBLE SHOOTER
NO
Adjust sensor voltage with digipot in
Factory menu to 4.2V ±0.05V
Bacharach Inc. CONFIDENTIAL for internal use only
DETECTOR CABLE
CHECK BOTH ENDS
EMITTER CABLE
CHECK BOTH ENDS
Bacharach Inc. CONFIDENTIAL for internal use only
H25-IR
Instruction 3015-5286