Bacharach 24-9351 manual Error Codes

Troubleshooting PCA

7.2 Error Codes

If one of the following messages appear at the bottom of the Sensor Status Screen, refer to Section 7.3 Troubleshooting Guide for information on how to correct the error.

O2 - SENSOR ERROR	O2 Sensor not connected, or is expired, or
	was exposed to combustion gases during
	warmup.
CO - SENSOR ERROR	Carbon Monoxide sensor is expired, or was
	exposed to Carbon Monoxide during
	warmup.
NX - SENSOR ERROR	Nitric Oxide sensor is expired, or was
	exposed to Nitric Oxide during warm up,
	or the bias battery is dead.
TL-SENSOR ERROR	Room air thermocouple is outside the
	range of –20 to 100 °C (–4 to 212 °F)
TA-SENSOR ERROR	Flue Gas thermocouple is not connected
	or is outside the range of –20 to 1200 °C
	(–4 to 2192 °F)
DRAFT-SENSOR ERROR	Outside the range of –7.5 to +7.5 mb
	(– 3 to + 3inches of water column)
LOW BATTERY	Battery voltage has dropped below 3.9 volts.
	The instrument will shut off when battery
	voltage drops below 3.5 volts.
“– – – –”	Not calculated (O2 above 18.8%,
	or the temperature is above 1200 °C
	(2192 °F), or sensor error
“* * * *”	Sensor not installed
“XXXX”	Overrange (numeric)

7-2 Instruction 24-9351