SERVICING
54
DIAGNOSTIC CODES
7 SEGMENT LED
(characters will alternate)
(no display) INTERNAL CONTROL FAULT / NO POWER
On STANDBY, WAITING FOR INPUTS
Ec HEATER KIT TOO LARGE, TOO SMALL, OR NO MATCH
E5 FUSE OPEN
EF AUXILIARY SWITCH OPEN
d0 DATA NOT ON NETWORK
d1 INVALID DATA ON NETWORK
d4 INVALID MEMORY CARD DATA
b0 BLOWER MOTOR NOT RUNNING
b1 BLOWER MOTOR COMMUNICATION ERROR
b2 BLOWER MOTOR HP MIS-MATCH
b3 BLOWER MOTOR OPERATING IN POWER, TEMP., OR SPEED LIMIT
b4 BLOWER MOTOR CURRENT TRP OR LOST ROTOR
b5 BLOWER MOTOR ROTOR LOCKED
b6 OVER / UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP
b7 INCOMPLETE PARAMETER SENT TO MOTOR
b9 LOW INDOOR AIRFLOW
h1 EMERGENCY HEAT LOW - COMMUNICATING MODE ONLY
h2 EMERGENCY HEAT HIGH - COMMUNICATING MODE ONLY
FC FAN COOL - COMMUNICATING MODE ONLY
FH FAN HIGH - COMMUNICATING MODE ONLY
FFAN ONLY
H1 ELECTRIC HEAT LOW
H2 ELECTRIC HEAT HIGH
GREEN CFM LED EACH FLASH REPRESENTS 100 CFM
(USE FOR AIRFLOW APPROXIMATION ONLY)
EXAMPLE: 8 FLASHES = 800 CFM
DESCRIPTION OF CONDITION
0140A00070-A
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