Emerson Process Management IM-106-340 Fault 4, A/D Comm Error Membrane Keypad, Keypad LOI

Oxymitter 4000

Figure 8-6. Fault 4, A/D Comm Error

	HEATER T/C
DIAGNOSTIC	HEATER	SW2
ALARMS	O2 CELL	ON
	CALIBRATION

CALIBRATION RECOMMENDED

Instruction Manual

IM-106-340, Rev. 4.0

May 2006

Fault 4, A/D Comm Error

Membrane Keypad

When Fault 4 is detected, the HEATER T/C LED flashes four times, pauses for three seconds, and repeats (Figure 8-6).

1. Call the factory for assistance.

TEST

POINTS

INC INC

HIGH LOW GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mV - HEATER T/C + HEATER T/C -

CAL

TEST GAS + PROCESS - % O2

TP1 TP2 TP3 TP4

TP5

TP6

J1 RED YEL GRN ORG

KEYPAD

LOI

When Fault 4 is detected, the LOI displays the "ADC Error" message.

1. Call the factory for assistance.

Alarms

ADC Error

37260022

LOI

8-10