Unit Pc Control; Troubleshooting - Komfovent C3 Installation And Operation Manual

2.8. Unit PC control

This is additionally ordered function and for it implementation special network module "Ping2" is provided.
Connection diagrams and installation requirements of network module are given in the "Ping2" module instal-
lation manual.
After connecting units through special network modules to computer network or Internet and given an IP
address, integrated web server allows the operator from his computer not only to monitor, but also to control
air handling units operation: to turn on/off, change ventilation intensity and etc. It also allows indicating failures.

2.9. Troubleshooting

If the unit is not working:
• Make sure if the unit is connected to the electrical power supply.
• Check if the unit main switch is on (if designed).
• Check all control block fuses. If needed, change failed fuses with the new ones that are the same electrical
parameters as old ones (fuses types are shown in wiring diagrams).
• Check if there is not failure indication on the control panel. If there is indication, it needs to be eliminated
first. To eliminate failure use 7.9 Table, which describes failures.
• If nothing is indicating on control panel, check whether cable connecting control panel with the unit is not
damaged.
2.9 Table. Failures indicated on the control panel, possible reasons and it elimination
Message
UAB AMALVA we reserve the right to make changes without prior notice
C3-16-01-v1
LED Possible Failure Cause
Red and
green Supply air filter is clogged.
blinking
Red and
green Exhaust air filter is clogged.
blinking
Supply air temperature dropped
Red light
lower allowable level.
Supply air temperature is higher al-
Red light
lowable level.
Supply air
Red light
overheated due to excessive load.
Exhaust air fan overheated due to
Red light
excessive load.
Red and
Heater is disconnected due to low
green
air flow.
blinking
Electric heater
Red light
protection is on.
Return water temperature in water
Red light
heater dropped lower allowable level.
Temperature of the air passing
Red light through plate
dropped lower allowable level.
The belt is broken, or failure of the
Red light
rotor motor.
Received fire alarm signal from the
Red light
building fire system.
Supply air temperature sensor is not
Red light
connected or broken down.
After unit is off, it is necessary to change
filter.
After unit is off, it is necessary to change
filter.
Check program settings, unit heat
exchanger and heater operation.
Check program settings, unit heat
exchanger and heater operation.
Check if air filters are inserted, if the unit
fan motor
doors are closed, if unit ventilation system
has been installed correctly.
Check if air filters are inserted, if the unit
doors are closed, if unit ventilation system
has been installed correctly.
When heater cools down, protection restores
automatically. It is recommended to increase
ventilation intensity level.
To restore protection, it is possible only after
overheating
pressing "RESET" button, which is located
on the heater.
Check circulation pump and heating system
condition, heating valve actuator performance.
Check by-pass damper condition and
heat exchanger, actuator performance. It is recommended to
decrease ventilation level.
Check rotor drive and rotation
sensor condition.
When fire alarm signal disappears, unit
needs to be restarted from control panel.
It is necessary to check sensor
connections or change the sensor.
Failure Elimination
31