A
M-TRAC1
IOM-55
May 2019
7
DIP SWITCHES
The M-TRAC1 options are configured by DIP switch selection and/or wiring connections. DIP
switch settings are noted on the internal wiring diagram, and should not be altered.
TABLE 2
DIP SW
Description
10
Disable Auto Heat Switch. If enabled the M-TRAC1 will monitor the discharge air
temperature and disable the heat if the temperature is constantly greater than
the Setpoint (> 3˚F).
9
Extended Profile Velocity Range. Allows the M-TRAC1 to be compatible with
older equipment.
8
Service Mode. Enable to manually control the firing rate.
7
Air Priority Program. See Blower Control.
6
16 Second Pre-purge. Heating will delay on after fan starts.
5
Slow Opening Valve. See Modulating Valve Light Off Position.
4
Disable Open Sensor Checking. See Discharge Air Setpoint.
3
Disable Low Limit. See Low Limit.
2
Alarm contact to be used for reverse interlock. See Reverse Interlock.
1
2-10 Vdc Set Point Reset. See Temperature Reset.
Note: Table based on model M-TRAC 1.4.3
INDICATION AND DIAGNOSTIC LIGHTS
There are 5 status lights on the M-TRAC1 labeled A to E. They operate in 4 patterns: an
irregular flash (.. __ .. __ ..), fast flash (…….), slow flash (. . .), or constantly on (_____).
TABLE 3
IRREGULAR
FAST
SLOW
ON
LIGHT
System Lockout
System Lockout
System
Problem
System
Ok
A – GREEN
Wiring Or Flame
Relay Problem
Prepurge Or Valve
Positioning Delay
Limit Open
Ignition
Attempt
B – RED
Air Flow Or M-TRAC
Problem
Air Velocity Very Low
Air Velocity Too
Low
Air Velocity Too
High
C – RED
Service Mode
Ignition Failure
Heat Switch Open Burner On
D – RED
Open Discharge
Sensor
Discharge Temp Low Fan Switch Open
Damper Open
Delay
E – RED
