All installations and services must be performed by qualified service personnel.
33
DIAGNOSTIC FEATURES
The integrated control continuously monitors its own operation and the operation
of the system. If a failure occurs, the LED will indicate a failure code as shown
below. If the failure is internal to the control, the light will stay on continuously. In
this case, the entire control should be replaced, as the control is not field-
repairable.
If the sensed failure is in the system (external to the control), the LED will flash
in the following flash-pause sequences to indicate failure status (each flash will
last approximately 0.25 seconds, and each pause will last approximately 1
second).
LED Off - No power to control, pushbutton switch pressed, or control fault
LED steady ON (Any color) - Control hardware fault detected
Slow Green flash - No call for heat, no active errors
Slow Orange flash - Call for heat present, no active errors
1 RED flash - High limit switch open
2 RED flashes - Pressure switch open with inducer on
3 RED flashes - Pressure switch closed with inducer off
4 RED flashes - 1 hour lockout code
5 RED flashes - Incorrect line voltage polarity or incorrect polarity on 24 VAC
line from transformer
6 RED flashes – Too many limit trips in one call for heat
7 RED flashes – Pressure switch cycle lockout
8 RED flashes - Too many flame dropouts detected
9 RED flashes – Not Used
10 RED flashes – Flame present with gas valve off
Rapid flash – Incorrect 24 VAC phasing/twinning error
: Power must be disconnected before servicing.
