EVERSKY
™
MS-CDF-019
–
Manufacturing Nr: 22
0001→
Version B
Update: 2022/06/14
56/70
The pressure switch is of the NO type (normally
open).
- Poor electrical connection
- Incorrect pneumatic connection
- Incorrect setting (factory setting = 25Pa)
- Faulty electrical wiring/connection
Transparent pressure switch tubes for fan operation
control:
- Wrong connection
- Presence of internal condensation water. This may be due
to prolonged shutdown of the unit, or repeated/too many
on/off cycles. Adjust the machine for continuous
operation.
- Foreign matter or dust in the tube or pressure tap.
The reduced speed and/or normal speed setpoint is too
low, and the fan speed signal does not reach sufficient
pressure to switch on the fan run control pressure switch.
Motorised extract air damper RMR remains in closed
position. Ductwork obstructed.
6
Filter guard 1
C
5s
Valeur de
réglage du
pressostat
filtres DEPFS
No stop
Machine in operation, DI1 input must be in the open
state "OFF" when the state of the filters is suitable, in
the closed state "ON" when the filters are clogged
(high filter pressure drop).
The filter pressure switch contact has closed for more
than 5s during operation.
The filter(s) are dirty and need to be replaced.
The filter(s) is (are) from a third party with pressure drop
characteristics that are not compatible with the machine.
The filter pressure switch(es) are incorrectly connected.
The pressure switches are incorrectly set (300Pa setting for
M5+M7 as standard)
The connection of the transparent tubes to the filter
pressure switch is not correct or there is water
condensation in the tubes.
8
Frost guard
(if hot water
heating coil)
C
120s
Stop and restarts
The DI2 input must be in the closed state "ON" if
there is no fault, in the open state "OFF" if there is a
fault.
The contact of the anti-freeze thermostat connected
to the DI2 input of the hot water coil has detected a
temperature lower than +5°C for more than 120s, the
unit is stopped and restarts automatically when the
thermostat is back above +5°C.
THA Thermostat:
- Wrong setting (factory setting = +5°C)
- Faulty
The hot water circulator does not work.
3-way valve:
- Faulty
- Bad electrical connection
- Bad air connection
The hot water generator does not work.
