18-CD19D8-18 37
Installer’s Guide
INTEGRATED FURNACE CONTROL RED LED "ERROR" FLASH CODES
2 Flashes --- System Lockout (Retries or Recycles exceeded)
3 Flashes ---
Draft Pressure Error - Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem
4 Flashes --- Open Temperature Limit Switch
5 Flashes --- Flame sensed when no flame should be present
6 Flashes ---
115 volt AC power reversed, ignitor (Triac) fault, poor grounding or
system voltage too low
7 Flashes --- Gas valve circuit error
8 Flashes --- Low flame sense
9 Flashes --- Open Inducer Limit switch
10 Flashes --- Inducer communication error
Solid --- Internal GV error or Low TH voltage
Solid Red w/Solid
Green "STATUS" LED
Continuous Reset caused by a blown fuse or internal error.
FAULT CODE RECOVERY
On power up, last 4 faults, if any, will be flashed on the red
LED. The newest fault detected will flash first and the oldest
last. There will be a 2 second delay between fault code
flashes. Solid red LED error codes will not be displayed.
The Green LED will be on solid during last fault recovery.
At any other time the control is powered, the Green LED
indicator light will operate as shown in Table 19 and the red
LED will flash LitePort data (one flash) every 20 seconds.
Fault Code Reset
The last 4 fault codes can be erased from memory by power-
ing up the control with “G” energized and then applying “R”
to the “W1” terminal 3 times within 6 seconds. The control
will acknowledge the reset by turning on the red LED for
2 seconds.
Red LitePort™ LED
Green Status LED
Q
*UX / DX Integrated Furnace Control
INTEGRATED FURNACE CONTROL
GREEN "STATUS" LED FLASH CODES
Flashing Slow --- Normal - No call for Heat
Flashing Fast --- Normal - Call for Heat
TABLE 19
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