Komfovent VERSO Pro P, Инструкция по установке и обслуживанию

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V-C5.1_21-01
48
EN
Code Message Possible cause Elimination
5A, 6A
Outdoor air temperature
sensor failure
The external air temperature sensor is
not connected or broken.
Check connections of the sensor or replace the
sensor.
7A, 8A
Exhaust air temperature
sensor failure
The exhaust air temperature sensor is
not connected or blocked.
Check connections of the sensor or replace the
sensor.
9A, 10A
Water temperature sen-
sor failure
The water temperature sensor is not
connected or broken.
Check connections of the sensor or replace the
sensor.
11A
Return water
temperature low
Return water temperature of the
heater dropped below the permis-
sible limit.
Check the status and operation of the circulation
pump, heating system and mixing valve actuator.
12A Internal fire alarm Fire danger in the ventilation system.
Check the ventilation system. Find the source of
the heat.
13A External fire alarm
A fire signal has been received from
the fire signalization system of the
building.
Delete alarm message and restart the unit when
the fire signal disappears.
14A External stop
A signal from an external device
(switch, timer, or sensor) has been
received.
As soon as the auxiliary device is switched off, the
unit will operate in the previous mode.
15A Heat exchanger failure
Blocked or not rotating rotor, by-pass
damper failure.
Check the rotor drive, replace the belt or check
the by-pass channel operation.
16A Heat exchanger icing
Icing may form under a low outdoor
temperature and high room humidity.
Check the operation of the rotation heat
exchanger drive or the air bypass damper of the
plate heat exchanger.
17A
Low supply air tem-
perature
The heating equipment fails to oper-
ate or its capacity is insufficient.
Check the heating equipment.
18A
High supply air
temperature
The heating equipment is not control-
lable (mixing valve or contactor is
blocked).
Check the heating equipment.
21A-23A Electric heater overheat
The emergency overheating protec-
tion of the electrical heater has
actuated.
Protection can be reset only by pressing the
RESET press-button on the heater.
24A, 25A
Evaporator air tempera-
ture sensor failure
The evaporator air temperature sen-
sor is not connected or broken.
Check connections of the sensor or replace the
sensor.
46A
CF exchanger not
calibrated
CF calibration failed and there is a risk
of exchanger freezing
Make sure that all doors are closed, there is no
obstructions in the ducts and AHU can reached
airflow setpoint of COMFORT 1 mode. Repeat
calibration manually (see 6.5.1.3).
15B Evaporator icing
The evaporator is iced over due to
excessively high humidity content
in the exhaust air and low outdoor
temperatures.
Check the operation of the evaporator defrost
system (see Troubleshooting of heat pump).
12B
High pressure on
compressor
Compressor system operated in an
overload mode as a result of too high
temperature in the condensing unit.
Indentify the cause and eliminate it ( see Trouble-
shooting of heat pump ).
13B
Low pressure on
compressor
Compressor system is leaky or the
amount of refrigerant is insufficient.
Indentify the cause and eliminate it ( see Trouble-
shooting of heat pump ).
16B-18B,
28A-30A
Compressor failure
No power supply.
Check supply voltage on the circuit breaker and/or
make sure whether it is on.
Supply voltage mismatches.
Check that the supply voltage is on all three
phases, if necessary, swap the two phase conduc-
tor positions.
Compressor motor failure.
Check the compressor motor and replace it if
necessary.
Compressor drive failure.
Check the operation of the compressor drive and
replace it if necessary.