Emerson White-Rodgers 48C21-707 Mode D'emploi page 4

TROUBLESHOOTING
Fault and Status Codes
The LED will indicate fault or status codes as shown in the table below:
7 Segment (characters
will alternate)
CFM: Each Flash of Green LED = 100 CFM
Use for Airflow Approximation Only (Example: 8 Flashes = 800 CFM)
NOTE: Defrost is displayed as H1 in a legacy setup
Fault Recall
When the control is in standby mode (no call for heat or cool),
press the "SELECT" button for approximately two – five seconds.
NOTE: While displaying the stored fault codes, the control will
ignore any new call for heat, cool or fan. Consecutively repeated
faults are displayed a maximum of three times.
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trademarks of Emerson Electric Co.
©2017 Emerson Electric Co. All
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None 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 Mismatch
b3 Blower Motor Operating in Power, Temp., Or Speed Limit
b4 Blower Motor Current Trip 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
C1 Low Stage Cool - Legacy Mode Only
C2 High Stage Cool - Legacy Mode Only
P1 Low Stage Heat Pump Heat - Legacy Mode Only
P2 High Stage Heat Pump Heat - Legacy Mode Only
h1 Emergency Heat Low - Communicating Mode Only
h2 Emergency Heat High - Communicating Mode Only
FC Fan Cool - Communicating Mode Only
FH Fan Heat - Communicating Mode Only
F Fan Only
H1 Electric Heat Low
H2 Electric Heat High
dF Defrost - Communicating Mode Only
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Error / Condition
Fault Code Reset
When the control is in standby mode (no call for heat or cool),
press the "SELECT" button for five to ten seconds or until the
diagnostic LED begins to rapid flash.
NOTE: If the switch is held pressed for over ten seconds the
rapid flash will stop and the LED will be on to indicate return
to normal status.