23
Service Facts
M952-SF-4
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
powering 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 indicator
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
M952V060BU36AB
M952V060BD36AB
63
56
51
46
42
39
36
34
M952V080BU36AB
M952V080BD36AB
68
61
56
52
48
45
42
40
M952V100CU48AB
M952V100CD48AB
65
60
56
53
50
47
44
42
40
38
37
35
M952V120DU60AB
M952V120DD60AB
67
63
59
56
53
51
48
46
44
42
Содержание M952V060BD36AB
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