Carrier 42N_S serie Installations- Und Bedienanweisungen Seite 29

NTC Control
Operation of STATUS and CCN leds
Alarm number Description of alarm (60msec on, 60msec off if not otherwise indicated)
ND Unit not fed or card not powered because of failure
ND Card fed but microprocessor not active or broken
Card is working without application software or Bootloader is initialised (normally at start-
ND
up for a few seconds)
ALARM 1 The RAT sensor detects an out-of-range value for 192 consecutive seconds
ALARM 2 The changeover sensor detects an out-of-range value for 192 consecutive seconds
ALARM 3 The Supply Air sensor detects an out-of-range value for 192 consecutive seconds
The Air sensor of SUI remote control detects an out-of-range value for at least 192
ALARM 4
consecutive seconds
CO2 sensor (if any) detects a value lower than 300ppm (15%) for at least 192 consecutive
ALARM 5
seconds
Incorrect operation of the condensate drainage pump (if any)
ALARM 6 The contact is open for 10 consecutive minutes
The contact is still active after the 4
ALARM 7 UV lamp (if any) not working
Communication error with a remote control (CRC2, ZUI if failure after 3 consecutive
ALARM 8
communication attempts
Communication error with Master unit. If "temperature check" message is not received
ALARM 9
within more than 10 minutes
Communication error with Leader unit. If "temperature check" message is not received
ALARM 10
within more than 10 minutes
CO2Tvoc reading error. If no Co2Tvoc reading is received by the Leader unit within more
ALARM 11
than 10 minutes
Communication error with Master Zonig. If no Zoning value is received by the Master
ALARM 12
within more than 10 minutes
ALARM 13 Maintenance required
ALARM 14 EEprom error. If checksum is wrong
Electric heaters (if any) error
value for 10 consecutive minutes
ALARM 15
Or
admitted value for 5 consecutive seconds
ALARM 16 Configuration error. An inaccurate configuration value of the card is detected
ALARM 1 or ALARM 2 or ALARM 3 or ALARM 4 or ALARM 5 or... ALARM 15
If the "Summary Alarm Enable" decision indicated in table ALRMDEF is correct, only
ALARM 17
this alarm is displayed. When any bit in Alarm Status is set, the alarm displayed will be
"Summary Alarm – Alarm Status XX"
ALARM XX The card is not working correctly
th
reading
Pulse number
Always off
Always on
On for 800ms off for 200ms (1 HZ)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
42N_S 42N_E 29