Carrier XCT7 Installations- Und Benutzerhandbuch Seite 29

Failure codes
Digital
tube
Failure
indication
code
on
definition
master
t
uni
CT current is too
low or current
53
sensor fault
Valve plate
module
54
communication
fault
Valve plate
module LEV fault
55
Valve plate
56
module temp. too
high
Communication
failure between
valve plate
57
module and
host computer
(sent through
valve plate)
Tc1 temp sensor
of valve plate
58
error (sending
by valve plate)
Tc2 temp sensor
of valve plate
59
error (sent
through valve
plate)
Valve plate
module
60
error(sent
through valve
plate)
Valve plate
module error
61
(sent through
valve plate)
Valve plate
module error
62
(sent through
valve plate)
Valve plate
dial setting
63
error
CT current is too
high
64
Failure description
3 minutes after recovery
Cannot receive valve plate module signal in 200
continuous rounds, or received wrong data, recovers
automatically upon receiving correct data.
During cooling operation, when Tc2 ≤ Tao-10 ° C and Tc2
≤ average Tc2 temperature of the internal unit + 0 ° C for
1 minute, an alarm will be issued. When Tc2 ≥ Tao-5
and TC ≥ average
2 Tc2 temperature of the internal unit
+ 5 ° C for 1 minute once the fault is resolved.
When Tc1 ≥ 85°C is detected for 5 seconds, the thermal
storage module overheating protection is reported.
Tc1 ≤ 80°C for 5 seconds to recover. 3 lockouts per hour.
Communication failure between valve plate module
and host computer
Tc1 temp. sensor cannot connect with valve plate module
Tc2 temp. sensor cannot connect with valve plate module
Reserved
Reserved
Reserved
No valve plate module dial, but valve plate module is
detected.
CT current exceeds specified value 3 minutes after
recovery
22
Remarks
Thrice an hour,
confirm failure;
once confirmed,
non-resumable
Resumable
° C
Resumable
Once
confirmed, non-
resumable"
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Once confirmed,
non-resumable
Thrice an hour,
confirm failure;
once confirmed,
non-resumable