Emerson 47D01U-843 Manual de instrucciones de instalación - Página 8
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TROUBLESHOOTING
Active Error
Active errors are fault conditions present in the system. The highest priority error will show toggling
between the operating condition followed by a 1 second pause. Any remaining active errors are displayed
in the "Er" Error Menu. Once the condition is corrected, the errors will be removed from active status.
Fault Recall
Stored errors are fault conditions that can be recalled in the "Fr" menu. The last four faults will be stored
with a maximum of two identical faults. Holding the OPTION+SELECT switch for greater than 7 seconds
and less then 10 seconds will clear all fault(s). The display will flash "_" and "_" three times to indicate the
fault(s) are successfully removed.
Table 3: Troubleshooting
8x8 Display
Error/ Condition
Power up
Standby
Running in cooling mode
Running in heating mode
Running in defrost mode
Field test mode
LPC trip
LPC lockout
HPC trip
HPC lockout
Air sensor fault
Coil sensor fault
Two consecutive defrosts
terminated on maximum defrost
time
Low control voltage
(24V brownout)
Control failure
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Comments/Troubleshooting
Normal Operation.
During power up all LED's on the 8x8 matrix display will light up
Normal operation with power and no active call
Steady on represents an active call for cooling. Blinking represents
short cycle or other time delay active with a compressor demand.
Steady on represents an active call for heating. Blinking represents
short cycle or other time delay active with a compressor demand.
Represents the control in defrost mode.
This code will be displayed till the OPTION+SELECT buttons are
pressed. Applicable to short cycle bypass as well as forced defrost field
test mode.
Low pressure switch must be connected to the control and option
selected from menu. If low pressure switch opens during an active call
the system will shut down. Normal operation will resume after switch
is closed
If the low pressure switch opens 3 times the control will lockout.
High pressure switch must be connected to the control and option
selected from menu. The pressure switch is normally closed. On open
condition will trigger this error. Normal operation will resume after
switch is closed
If the high pressure switch opens 3 times the control will lockout.
Outdoor Air Temperature Sensor (OAT) is at fault. Possible bad
connection. Sensor is rated 10K ±1% @25° C.
Outdoor Coil Temperature Sensor (OCT) is at fault. Possible bad
connection. Sensor is rated 10K ±1% @25° C.
Possible 24V brownout condition
Check for miswire of 24 VAC on Yout/cc. If error continues, replace
control.