Controller Troubleshooting - Hussmann DC-1 Series Installation Manual

PRODUCT INSTALLATION MANUAL

Controller Troubleshooting

If the remedial actions does not solve the issue, please contact technician for assistance
ISSUE
Controller is off
ISSUE
Temperature reading
abnormal
Error Message(for Multiple
controllers sharing
pressure transducer)
dPP
rPF
Error message/Alarm
noL
P1, P2, P3, P4, P5, P6
HA
LA
Had
Lad
HAF
LAF
dA
EA
CA
PAL
LOP
MOP
LSH
HSH
rtC
rtF
EE
Err
End
_________________________________________________________________________________________________________________________
Page 29
POSSIBLE REASON
Circuit breaker tripped due to short circuit
System overload protection
POSSIBLE REASON
Sensors loose connection
Sensor breakdown
POSSIBLE REASONS
The local transducer read a wrong value.
The pressure is out of the bounds of the
pressure transducer
P5C(type of transducer) is mismatched
with the pressure transducer
Unable to read the virtual pressure on
slave case controller
POSSIBLE REASON
Keyboard is not able to communicate
with the XM668D or XM678D
Sensor break down, value out of range or
sensor incorrectly configured.
Room temperature exceed the highest
room threshold temperature
Room temperature exceed the highest
room threshold temperature
Defrost temperature exceed the highest
room threshold temperature
Defrost temperature exceed the lowest
room threshold temperature
Fan temperature exceed the highest
room threshold temperature
Fan temperature exceed the lowest room
threshold temperature
Door open alarm activated
Generic Alarm from customised digital
input
Severe alarm of regulation lock from
customised digital input
Pressure switch lock is activated
System reaches lowest operating
pressure threshold
System reaches highest operating
pressure threshold
Superheating reaches lowest superheat
alarm threshold
Superheating reaches highest superheat
alarm threshold
Clock setting lost
Clock damaged
EEPROM serious problem
Error with upload/download parameters
Parameters correctly transferred
Table (2) Controller Troubleshooting
REMEDIAL ACTIONS
Close the circuit breaker and check if tripping
again. Contact service team
Check the load on the controller. The maximum
external load is 16A
REMEDIAL ACTIONS
Reconnect the sensor and check the connectivity
of terminal block
Unplug the sensor and test according to the
sensor specification- available from PED sheet. If
broken replace the sensors
REMEDIAL ACTIONS
This error message may occur during the start-up
of the system. Wait several minutes for system
refrigerant balance. otherwise checking the rating
of the transducer or P5C parameters, or changing
the transducer
Check the status of the on board GREEN LED: if
this LED is OFF the LAN is not working, otherwise
check the remote transducer
REMEDIAL ACTIONS
Verify the connection or call for service
Check the sensors rating, condition and replace if
necessary
Check the room temperature condition or room
temperature sensor
Check the room temperature condition or room
temperature sensor
Check the defrost condition or defrost temperature
sensor
Check the defrost condition or defrost temperature
sensor
Check the Fan running condition or Fan
temperature sensor
Check the Fan running condition or Fan
temperature sensor
Close the door
Check the customised digital input functionality
Check the customised digital input functionality
Check the pressure switch
Check the refrigerant charge
Check the pressure transducer
Check the refrigerant charge
Check the pressure transducer
Contact technician
Contact technician
Reset the clock
Contact technician
Contact Emerson technician
Contact Emerson technician
N/A
DC13 COLD PLATE
Hussmann