| 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 |
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| 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. |
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| 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 |
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| 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:
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| 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. |
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| 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 |
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| 20B | Supply air overheating |
If the supply air temperature is above +45 *C, unit will stop operating with 10 min delay |
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| 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 |
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| 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 |
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| 19A | Low supply air temperature |
If the supply air temperature falls below +5 *C, unit will stop operating with 10 min. delay. |
Troubleshooting guide | |