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TABLE 20
FURNACE FAULT CODES EXPANDED W/DESCRIPTIONS AND SOLUTIONS
FAULT CODES
NOTE: The text in the “DISPLAYED TEXT” box shows combinations of upper-case and lower-case letters. Upper-case letters are used in the message displayed at the thermostat active
fault screen. For example, the text CARD-HARDware CoNFLiCT
indicates that the message displayed at the thermostat active fault screen will be CARD-HARD CNFLCT.
NOTE: The following fault codes will not be stored back-to-back in the fault buffer. These will only be stored in the buffer if the previous fault stored was a different fault. 82, 11, 45, 46 & 57.
NOTE: To clear current fault codes in the furnace control buffer, turn dipswitch SW3-2 on, off, on, off, or off, on, off, on within 30 seconds. The right-most seven-segment display will ener-
gize the upper and lower horizontal members for four seconds as confirmation that the faults have been cleared. Be sure to return the dispswitch (SW3-3) to its original position after clear-
ing the faults. The fault buffer can also be cleared at the user menu under “FAULT HISTORY” in the sub-menu titled “CLEAR FAULT HISTORY”.
Either procedure will clear the fault codes in the buffer displayed at the dual seven-segment displays on the I.F.C. AND
at the Fault History user menu on communicating thermostats.
NOTE: The following fault codes will not be stored back-to-back in the fault buffer. These will only be stored in the buffer if the previous fault stored was a different fault. 82, 11, 45, 46 & 57.
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