Katherm HK
Assembly, installation and operating instructions
73
Fault Possible cause Remedy
Unit too loud
Speed too high. Set a lower speed, if possible.
Air inlet/outlet opening is obstructed. Free air ducts.
Filter dirty. Replace filter.
Rotating parts unbalanced
Clean and/or replace impeller. Please make sure
that no balancing clips are removed during
cleaning.
Fan dirty. Clean dirt from fan.
Heat exchanger dirty. Clean dirt from Heat exchanger.
11.2 KaControl faults
Code Alarms Priority
A11 Faulty control sensor. 1
A12 Motor fault. 2
A13 Room frost protection. 3
A14 Condensation alarm. 4
A15 General alarm. 5
A16 Sensor AI1, AI2 or AI3 faulty. 6
A17 Unit frost protection. 7
A18 EEPROM error. 8
A19 Offline slave in the CAN bus network. 9
Tab.18: KaControl unit alarms
Code Alarms
tAL1 Temperature sensor in the KaController faulty.
tAL3 Real-time clock in the KaController faulty.
tAL4 EEPROM in the KaController faulty.
Cn Communication fault with the external control.
Tab.19: KaController alarms
IMPORTANT NOTE!
Important note!
More information on control settings can be found in the separate KaControl SmartBoard user manual.
11.3 Start-up after rectification of fault
After correction of the fault, carry out the following steps to re-start:
1. Make sure that all maintenance covers and access openings are sealed.
2. Switch off the unit.
3. Acknowledge fault on controller, if necessary.
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