Alarm list

Code Alarm text Comment Troubleshooting tips
Text Hex
9A   B1 sensor failure

When temperature exceeds the maximum permitted

limits: -30 *C ... +75 *C, the unit stops operating immediately

Troubleshooting guide

11A   Rotor stopping

When there is no signal from the rotor's rotation sensor,

if the "Summer" season is set, the warning message appears

in 2min. on the control panel. Unit operation is not terminated.

Troubleshooting guide

13A   Heater Off

Unit with electric heater has protection from overheating

at 70 *C, which can be activated if the heater blow-cooling

is insufficient. Unit operation is not terminated

Troubleshooting guide

14A   Service time

Depending on the intensity of unit operation, at a certain

time a periodic inspection message appears on the control panel

Resetting fault:

  1. Turn off unit via control panel
  2. Turn off unit power supply
  3. Change filters and do all required maintenance
  4. Turn on unit power supply
  5. Reset alarm
  6. Turn on unit.
3B   Rotor stopping

When there is no signal from the rotor's rotation sensor, if

the "Winter" season is set, the unit will stop operating in 2 min.

Troubleshooting guide

4B   Electric heater overheating

Unit with electric heater has emergency protection from

everheating at 100 *C, which ca be activated in case of

the heater failure. Unit operation is terminated

Troubleshooting guide

20B   Supply air overheating

If the supply air temperature is above +45 *C, unit will

stop operating with 10 min delay

Troubleshooting guide

27B   Return water low temperature

In the unit with water heater, when the water temperature

falls below the permitted value of +10 *C, the unit will stop

operating

Troubleshooting guide

28B   Plate heat exchanger frost possibility

In the unit with plate heat exchanger, if the freezing protection

of the heat exchanger is activated and is not restored, the unit

will stop operating

Troubleshooting guide

19A   Low supply air temperature

If the supply air temperature falls below +5 *C, unit will

stop operating with 10 min. delay.

Troubleshooting guide

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