Troubleshooting; Xx.1. Simplified Diagnostic Method; Xx.2. Alarms Classification - Caladair EVERSKY 500 Installation And Commissioning Manual

XX. TROUBLESHOOTING
First of all, check that the electrical connectors and terminal blocks are correctly connected and tightened, and that this operation
has not been omitted during the start-up phase of the equipment. Also check that the screw connectors are tight.
Defective parts must be replaced only with original components in order to comply with the regulations applicable to the product.
Replacing defective parts with non-original parts will result in the loss of the manufacturer's warranty for the entire equipment.

XX.1. Simplified diagnostic method

The table below provides a simple diagnostic method that can be used in case of a malfunction of the ventilation unit:
Symptoms*
The fans are not working and
the green P/B LED on the
controller is off (as well as
the HMI).
Check for the presence of
24Vac voltage between the
terminals "G" and "G0" of
the controller.
The fans are not working
and the green P/B LED on
the regulator is on (as well
as the HMI).
*The unit is properly powered and the front main switch is on the ON position

XX.2. Alarms classification

Each alarm is defined by a class (A, B, or C).
The class defines how the alarm (or fault) is acknowledged.
MS-CDF-019 – Manufacturing Nr: 220001→
1. The 3.15A T fuse in the fuse holder terminal is defective:
a. Check that the customer digital outputs (DO5/DO7 of the controller) are
relayed and do not directly supply any consumer component. The current is
limited to 100mA on each DO output.
b. Check that there are no short circuits on the AO1...AO5 outputs of the
electronic controller.
2. The fuse integrated into the 230Vac/24Vac control transformer is defective:
a. Check that there is no short-circuit on the 24Vac control part.
3. The water level in the condensate pan is too high and the overflow sensor has
triggered:
a. Check that the lifting pump is working properly
b. Check that there is no obstruction in the condensate drain line
c. Check the presence of the shunt between terminals (3) and (4) of connector
J6.
4. An external device (e.g. ADP fire stop or equivalent) is wired between terminals (21)
and (22) of terminal block (B2) and removing power from the controller. This device
must be reset after taking the appropriate safety precautions.
1. Check the presence of active alarms (see XX.10 Presence of active alarms)
2. Check the time schedule
3. Check the absence of external stop request (open circuit between terminal (75) of
terminal block (B7) and (DI5)
4. Check that the reduced speed and normal speed setpoints are greater than 30%.
EVERSKY
Possible causes
.
Version B Update: 2022/06/14
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