Error Codes: Overview - Daikin LMS Serie Betriebsanleitung

8 Troubleshooting
Malfunction
Compressor stops. The ▪ Check if air inlet or outlet of the unit
unit is equipped with an condenser
overtemperature device obstacles. Remove any obstacles
which stops the and make sure the air can flow freely.
compressor every time the
▪ Check
max. allowable
Correct if necessary.
temperature of motor
▪ Check operation of the condenser
windings is exceeded.
fan. If it is not working, contact your
Possible causes are:
dealer.
▪ Insufficient ventilation of
the room where the unit
is installed.
▪ Anomaly in mains
voltage.
▪ Faulty operation of
condenser fan.
Device reset is automatic
after temperature dropped
to normal.
The system stops ▪ Check if air inlet or outlet of outdoor
immediately after starting or indoor unit is not blocked by
operation. obstacles. Remove any obstacles
and make sure the air can flow freely.
The system operates but ▪ Check if air inlet or outlet of the unit
cooling is insufficient. evaporator
obstacles. Remove any obstacles
and make sure the air can flow freely.
▪ Check if the evaporator inside the
cold room is not frosted up. Defrost
the unit manually, or shorten the
defrost operation cycle.
▪ Check if there are not too many
articles inside the cold room, see
Loading the goods. Remove a couple
of articles.
▪ Check
circulation inside the cold room.
Reorganise the articles inside the
cold room, see Loading the goods.
▪ Check if there is not too much dust on
the condenser. Remove the dust, see
To clean the interior.
▪ Check if there is cold air leaking out
of the cold room. Stop the air from
leaking outside.
▪ Check
temperature too high. Set the setpoint
appropriately, see To set the Set
Point.
▪ Check
temperature articles stored in the cold
room. Always store articles after they
have cooled down.
▪ Check if the door is not opened too
long. Reduce the opening time of the
door.
If after checking all above items, it is impossible to fix the problem
yourself, contact your installer and state the symptoms, the complete
model name of the unit (with manufacturing number if possible) and
the installation date (possibly listed on the warranty card).
Operation manual
18
Measure
is not blocked by
power supply (voltage).
is not blocked by
if there is smooth air
if you did not set the
if there are no high-
8.1

Error codes: Overview

In case a malfunction code appears on the indoor unit user interface
display, contact your installer and inform the malfunction code, the
unit type, and serial number (you can find this information on the
nameplate of the unit).
For your reference, a list with malfunction codes is provided. You
can, depending on the level of the malfunction code, reset the code
by pushing the ON/OFF button. If not, ask your installer for advice.
The error codes are visible in the alarm menu.
To access the alarm menu and to reset an alarm or error code, see
"4.5 About the alarms" [ 4 13].
Display Log
code code*
Afr 29 Frost protection
AtS 30 Restart in pump down
CE 28 Configuration write error
cht 17 High condensing temperature warning
CHt 18 High condensing temperature alarm
COM 34 VCC communication error
dA 14 Delayed alarm from external contact
dor 15 Door open
E1 1 Probe 1 faulty or disconnected
E2 2 Probe 2 faulty or disconnected
E3 3 Probe 3 faulty or disconnected
E4 4 Probe 4 faulty or disconnected
E5 5 Probe 5 faulty or disconnected
E6 6 Probe S1H faulty or disconnected
E7 7 Probe S2H faulty or disconnected
Ed1 10 Defrost terminated after maximum time
Ed2 11 Defrost on second evaporator terminated
after maximum time
EHI 36 High power supply voltage alarm
ELO 37 Low power supply voltage alarm
Etc 9 Clock error
GHI 19 Generic alarm high threshold
GLO 20 Generic alarm low threshold
HA 21 Type HA HACCP alarm (high temp. during
operation)
HF 22 Type HF HACCP alarm (high temp. after
blackout)
HI 24 High temperature
IA 13 Immediate alarm from external contact
LO 23 Low temperature Ad
LP 32 Low pressure
Man 38 Output status overridden in manual mode
Pd 26 Maximum pump down time
rE 12 Control probe faulty or disconnected
rSF 31 Refrigerant leak alarm
SF 27 Configuration not completed correctly
SrC 35 Maintenance request
UCF 33 VCC operation error
* This is the code used to record and display the alarm in Daikin
User.
Description
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728169-1B – 2023.07