SERVICING
25
DIAGNOSTIC CODES
On
Normal Operation
--
Eb
NO HTR KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (Minor Error Code)
(No Display)
Ed
HEATER KIT DIP SWITCHES NOT SET PROPERLY
Check Heater Kit Dip Switches
E5
FUSE OPEN
BLOWN FUSE
EF
AUXILIARY SWITCH OPEN
Auxiliary Contacts Open
d0
DATA NOT ON NETWORK
Data Not Yet On Network
d1
INVALID DATA ON NETWORK
Invalid Data On Netwrok
d4
INVALID BLUETOOTH® SHARED DATA LOADER BTSDL01 DATA
Invalid BTSDL01 data
b0
BLOWER MOTOR NOT RUNNING
Blower Motor Not Running
b1
BLOWER MOTOR COMMUNICATION ERROR
Blower Communication Error
b2
BLOWER MOTOR HP (Horse power) MISMATCH
Blower Motor HP Mismatch
b3
BLOWER MOTOR OPERATING IN POWER, TEMP., OR SPEED LIMIT
(No Display)
b4
BLOWER MOTOR CURRENT TRIP OR LOST ROTOR
Blower Trip or Lost Rotor
b6
OVER/UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP
Voltage or Temperature Trip
b7
INCOMPLETE PARAMETER SENT TO MOTOR
Incomplete Parameters Sent to Motor
b9
LOW INDOOR AIRFLOW (Minor Error Code) (without EH mode)
(No Display)
9b
LOW INDOOR AIRFLOW
(Major Error Code) (EH mode only)
LOW ID AIR EH MODE
70
EEV DISCONNECTION DETECTED
EEV OPEN CKT
73
LIQUID SIDE THERMISTOR ABNORMALITY
LIQ TEMP FLT
74
GAS SIDE THERMISTOR ABNORMALITY
GAS TEMP FLT
75
PRESSURE SENSOR ABNORMALITY
PRESSURE FLT
77
INDOOR UNIT - THERMOSTAT COMMUNICATION ERROR
(STARTUP OPERATION & DURING OPERATION)
TSTAT ID NO COM
Hu
HUMIDIFICATION DEMAND
(Running without heating)
--
FC
FAN COOL - COMMUNICATING MODE ONLY (Fan Demand-Cool)
--
FH
FAN HEAT - COMMUNICATING MODE ONLY (Fan Demand-Heat)
--
F
FAN ONLY (Fan Demand-Manual)
--
H1
ELECTRIC HEAT LOW (Heat Demand, Back-up Heat Demand)
--
H2
ELECTRIC HEAT HIGH (Heat Demand, Back-up Heat Demand)
--
dF
DEFROST - COMMUNICATING MODE ONLY (note: defrost is displayed as H1 in a legacy setup)
--
7 SEGMENT LED
DISPLAY
DESCRIPTION OF CONDITION
ERROR MESSAGE