LCD DISPLAY SCREENS
MODGAS-XWR-1 Technical Guide
24
Main Menu and Status Screens
Status Screens
Refer to the following map when navigating through the Status Screens.
From the STATUS Screen, press
<ENTER>
to scroll through the screens.
STATUS
MODE STATE
HEAT
VALVE 1
100%
VALVE 1 POSITION
0 to 100 percent or Closed
VALVE 2
100%
VALVE 2 POSITION
0 to 100 percent or Closed
This screen displays the current mode of operation. They are as follows:
OFF_MODE:
This mode will display when there is no call for Heat and
Heating has been disabled. All relays are off , all fi xed stages are off , and
the valves are moved to the home position. This is the default mode.
IGNITE_MODE:
Each time Heat is activated, the unit will fi rst go into
Ignition Mode. During this mode, the valve moves to the start position
and Stage 1 is ignited. Once Proof of Flame (POF) is established, the
unit will go into Heat. Proof of Flame is established when the POF signal
has been present for the ignition hold time. The ignition position and
proof of fl ame time can both be set in the hidden confi guration screen.
FORCE_MODE:
If the valves are being forced for testing, the board
moves into this mode. This mode maintains the normal heating se-
quence for each modulation confi guration, but instead of using the
PID Loop it uses the forced position (set from either the Force Menu or
through Modbus). After 10 minutes of no keypad input, the Force Mode
will disengage.
VCMX_EOL:
If the Controller is being tested for the VCM-X via I2C
communications, then the Controller moves into this mode.
MOD HEAT STAGE ##:
After Ignition Mode, the unit will enter the
Heat Mode and will begin to modulate the gas valve(s) to maintain the
Heating Supply Air Setpoint (SAT). Once the call for heat goes away, the
unit will leave the Heat Mode.
SLAVE_HEATING:
If the Controller is a Modbus slave to another
MODGAS-XWR, then this mode replaces Modulate Mode. If the board
is in this mode, then that means there is a MASTER XWR board running
the PID Loop control. A board in this mode simply mimics the operation
of the MASTER XWR board.
TEST_MODE:
If the Controller is being tested through Prism, the
Controller will move into this mode to operate (e.g. turn relays on/off ).
SOFTWARE
1086vXXX
STAGES
TOTAL #
TOTAL # OF STAGES CONFIGURED
Total number of fi xed and modulating stages
CURRENT SOFTWARE VERSION
You can access the protected screens from this screen by holding the
<UP>
button for 5 seconds and then releasing the button.
FAIL_STATE:
FAIL_STATE occurs when the supply air temperature
rises above the high temperature cutoff in any of the operating modes
or when the supply air temperature sensor cannot be detected while in
either stand-alone mode. The Controller will exit FAIL_STATE when the
supply air temperature drops 10ºF below the supply air setpoint or when
the SAT Sensor is reattached or detected again. Heat mode cannot be
entered while in this state.
MOD CNFG
xVyIGNzS
MODULATION CONFIGURATION
Displays the modulation confi guration of the board.
MODE STATE
ADDRESS
1(138)
CURRENT BOARD ADDRESS
Number in parentheses is E-BUS address.
