27
Service Facts
X343070P08
INTEGRATED FURNACE CONTROL LED FLASH CODES
RED LED - LitePort
TM
DATA - 1 FLASH EVERY 20 SECONDS
2 Flashes --- RETRIES OR RECYCLES EXCEEDED
3 Flashes --- INDUCER OR PRESSURE SWITCH ERROR
4 Flashes --- OPEN LIMIT OR ROLLOUT SWITCH
5 Flashes --- FLAME SENSED WHEN NO FLAME SHOULD BE PRESENT
6 Flashes --- LINE REVERSE POLARITY
7 Flashes --- GAS VALVE CIRCUIT ERROR
8 Flashes --- WEAK FLAME
9 Flashes --- OPEN INDUCER LIMIT ERROR
GREEN LED - STATUS
Slow Flash NORMAL, NO CALL FOR HEAT
Fast Flash NORMAL, CALL FOR HEAT PRESENT
GREEN and RED
LED's on Continuously
FUSE OPEN OR INTERNAL CONTROL FAILURE
INTEGRATED FURNACE CONTROL
GREEN "STATUS" LED FLASH CODES
Flashing Slow --- Normal - No call for Heat
Flashing Fast --- Normal - Call for Heat
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.
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 indica-
tor light will operate as shown in the table above and the red
LED will flash LitePort data (one flash) every 20 seconds.
IFC Error Flash Codes
Red LitePort
TM
LED
Green Status LED
*U/DH Integrated Furnace Control
CFM VS. TEMPERATURE RISE
MODEL
Cubic Feet Per Minute (CFM)
800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
*UH/DH2B060A9V3VA 63 56 51 46 42 39 36 34
*UH/DH2B080A9V3VA
*UH/DH2B080A9V4VA
68 61 56 52 48 45 42 40
*UH/DH2C100A9V4VA
*UH2C100A9V5VA
65 60 56 53 50 47 44 42 40 38 37 35
*UH/DH2D120A9V5VA 67 63 59 56 53 51 48 46 44 42
* - First letter may be "A" or "T"