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C5/C5.1

Alarm list
Code Alarm text Comment Troubleshooting tips Text Hex 1B 1 Low supply ai... more
24B - 94B - Compressor failure
Alarm conditions: 24B - Probe U3 broken or disconnected (Analog low pressure se... more
19B/20B - Compressor off
Alarm conditions: 19B - Heatpump can’t start due to too low air flow 20B - Hea... more
15B Evaporator icing
Alarm conditions: After three defrost cycles, pressure drop over evaporator hav... more
14B Service time
Alarm conditions: One year of continuous operation has passed. Solution: ... more
13B Low pressure on compressor
Alarm conditions: Reached minimum allowed pressure (0,5 bar), by presostat (RHP... more
12B - High pressure on compressor
Alarm conditions: Reached maximum allowed pressure (18 bar), by presostat (RHP ... more
6B-11B - Electric heater off
Alarm conditions: 6B - Heater overheat (TK70) 7B - Heater radiator overheat (T... more
4B/5B Clogged filters
Alarm conditions: DOMEKT/VERSO Standart - Filter pressure relay activated VERS... more
3B - VAV calibration fail
Alarm conditions: Both VAV sensors values are out of allowed range (3..9V). Po... more
1B/2B - Low airflow
Alarm conditions: 1B - Low supply airflow. Supply flow not reaching 80% of setp... more
114A-124A Communication error
Alarm conditions: 114A - no communication with supply fan C5_VM module 115A - ... more
102A/103A/107A/108A Fan motor overload
Alarm conditions: 102A - Supply fan motor overload (Lenze: F_EF), Overheat 103... more
101A/105A - Fan motor failure
Alarm conditions: 101A - Supply fan motor failure (Lenze: F_rF, F_0F1). Error i... more
100A/104A - Fan drive overload
Alarm conditions: 100A - Supply fan drive (frequency inverter) overload (Lenze:... more
99A/104A - Fan drive failure
Alarm conditions: 99A - Supply fan drive (frequency inverter) failure 104A - E... more
91A - 98A - Controller failure
Alarm conditions: 91A - Too low 24V supply voltage in C5 main controller 92A -... more
90A - Service mode
Alarm conditions: Main controller board (C5) is locked. Troubleshooting: Plea... more
88A/89A - Communication error
Pranešimo iššaukimo sąlygos: 88A (#88A)- No communication with C5_CF additiona... more
41A/42A - Supply air temp. sensor failure
Alarm conditions: 41A - Open circuit in supply air temp. circuit, 42A - Short ... more
39A/40A - Return water temperature too low
Alarm conditions: Return water temperature dropped below 8 oC. Possible causes... more
35A/36A/37A/38A - Return water temperature sensor failure
Alarm conditions: 35A - Open circuit in return water temperature circuit, 36A ... more
24A/25A/26A/27A - Evaporator sensor failure
Alarm conditions: 24A - Open circuit in evaporator air temperature sensor (B11)... more
31A/32A/33A/34A - Supply air temperature sensor failure
Alarm conditions: 31A - Open circuit in supply air temperature circuit (Zone 1)... more
21A/22A/23A - Electrical heater overheating
Alarm conditions: 21A - Activated heater TK100 overheating protection 22A - Ac... more
19A/20A - Airflow too low
Alarm conditions: 19A - Supply airflow does not reach 30% of setpoint. 20A - E... more
18A - High supply air temperature
Alarm conditions: Supply air temperature exceeding 45 oC.(for 10 mins). Possib... more
17A - Low supply air temperature
Alarm conditions: Supply air temperature dropped below 5 oC. Possible causes: ... more
16A - Heat exchanger freezing
Alarm conditions: Įrenginys fiksuoja šilumokaičio užšąlimą, kai po keturių band... more
15A - Heat exchanger failure
Alarm conditions: Heat exchanger efficiency dropped bellow 50%. Possible cause... more
14A - External stop
Alarm conditions: Short circuit in external stop circuit. Possible causes: ... more
13A - External fire
Alarm conditions: Supply air temperature reached 70 oC or extract air temperatu... more
12A - Internal fire
Alarm conditions: Supply air temperature reached 70 oC or extract air temperatu... more
11A - Low return water temperature
Alarm conditions: Return water temperature dropped below 8 oC. Possible causes... more
1A-10A - Air temperature sensor failure
Alarm conditions: 1A (#1A) - Open circuit in supply air temperature circuit, 2... more

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