101
ENG
µchiller +0300053EN rel. 2.2 - 14.12.2021
Alarms and signals
Code Description Reset E ect Priority Delay
No. of
attempts
Evaluation
period (s)
A34 EVD circuit 1: LowSH A - Fault, circuit 1 Param. S008 - -
A35 EVD circuito 1: LowSH M Circuit 1 shutdown Fault, circuit 1 Param. E024 - -
A36 EVD circuit 1: LOP A - Fault, circuit 1 Param. E025 - -
A37 EVD circuit 1: MOP A Circuit 1 shutdown Fault, circuit 1 Param. E026 - -
A38 EVD circuit 1: motor error M Circuit 1 shutdown Fault, circuit 1 No - -
A39 EVD circuit 1: emergency closing A - Fault, circuit 1 No - -
A40 EVD circuit 1: incomplete valve closing A - Fault, circuit 1 No - -
A41 EVD circuit 1: offl ine A Circuit 1 & 2 shut-
down
Serious, circuit
1 & 2
30s - -
A42 Circuit 1: envelope alarm + zone alarm A (R) Circuit 1 shutdown Serious, circuit 1 Param. P003 3 3600
A43 BLDC circuit 1: high pressure diff erential atstart-up A BLDC 1 not
enabled to start
Serious, circuit 1 5min - -
A44 BLDC circuit 1: failed start-up A (R) - Serious, circuit 1 45s 5 3600
A45 BLDC circuit 1: low pressure diff erential A Circuit 1 shutdown Serious, circuit 1 Param. P004 - -
A46 BLDC circuit 1: high gas discharge temp. M Circuit 1 shutdown Serious, circuit 1 No - -
A47 Speed drive 1: offl ine A Circuit 1 shutdown
/ BLDC 1
Serious, circuit 1 30s - -
A48 Speed drive 1: alarm + error code A (R) Circuit 1 shutdown
/ BLDC 1
Serious, circuit 1 No 3 3600
A49 Unit: circuit 2 offl ine A - Serious, circuit 2 30s - -
A50 Circuit 2 unit: no. permanent memory writes M - Fault No - -
A51 Circuit 2 unit: permanent memory writes M - Fault No - -
A52 Circuit 2: condensation pressure probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A53 Circuit 2: condensing temperature probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A54 Circuit 2: evaporation pressure probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A55 Circuit 2: evaporation temperature probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A56 Circuit 2: discharge temperature probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A57 Circuit 2: suction temperature probe A Circuit 2 shutdown Serious, circuit 2 10s - -
A58 Circuit 2: high pressure switch Param.
U081
Circuit 2 shutdown Serious, circuit 2 No - -
A59 Circuit 2: high condensing pressure/temperature
transducer
M Circuit 2 shutdown Serious, circuit 2 No - -
A60 Circuit 2: low pressure transducer A (R) Circuit 2 shutdown Serious, circuit 2 No 3 3600
A61 Circuit 2: frost protection evaporation temperature Param.
U081
Circuit 2 shutdown Serious, circuit 2 Param. U052 - -
A62 Circuit 2: low pressure switch Param.
U081
Circuit 2 shutdown Serious, circuit 2 Param.
C049, C050
3 3600
A63 Circuit 2: compressor 1 overload M Comp. 1 circ.
2 shutdown
Fault, circuit 2 No - -
A64 Circuit 2: compressor 2 overload M Comp. 2 circ.
2 shutdown
Fault, circuit 2 No - -
A65 Circuit 2: compressor 1 maintenance A - Fault Param. C006 - -
A66 Circuit 2: compressor 2 maintenance A - Fault Param. C003 - -
A67 Circuit 2: source fan maintenance A - Fault Param. S012 - -
A68 EVD circuit 2: LowSH M Circuit 2 shutdown Serious, circuit 2 Param. E024 - -
A69 EVD circuit 2: LOP A Circuit 2 shutdown Serious, circuit 2 Param. E025 - -
A70 EVD circuit 2: MOP A Circuit 2 shutdown Serious, circuit 2 Param. E026 - -
A71 EVD circuit 2: motor error M Circuit 2 shutdown Serious, circuit 2 No - -
A72 EVD circuit 2: emergency closing A Circuit 2 shutdown Serious, circuit 2 No - -
A73 EVD circuit 2: incomplete valve closing A Circuit 2 shutdown Serious, circuit 2 No - -
A74 EVD circuit 2: offl ine A Circuit 2 shutdown Serious, circuit 2 30s - -
A75 Circuit 2: envelope alarm + zone alarm A (R) Circuit 2 shutdown Serious, circuit 2 Param. P003 3 3600
A76 BLDC circuit 2: high pressure diff erential at start-up A BLDC 2 not
enabled to start
Serious, circuit 2 5min - -
A77 BLDC circuit 2: failed start-up A (R) - Serious, circuit 2 45 5 3600
A78 BLDC circuit 2: low pressure diff erential A Circuit 2 shutdown Serious, circuit 2 P004 - -
A79 BLDC circuit 2: high gas discharge temp. M Circuit 2 shutdown Serious, circuit 2 No - -
A80 Speeddrive circuit 2: offl ine A Comp. 1 circ.
2 shutdown
Serious, circuit 2 30s - -
A81 Speed drive circuit 2: alarm +code error A (R) Comp. 1 circ.
2 shutdown
Serious, circuit 2 No 3 3600
A85 Source delivery water temperature probe broken
or disconnected - circuit 1
A Circuit 1 shutdown Serious, circuit 1 No - -
A87 Unit: EVD Evolution not compatible A Unit shutdown Serious, unit No - -
Tab. 8.b
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