Emergency Operation Of Air-Conditioner - Carrier Harmony 53VMC18A-H Service And Maintenance Manual

13. EMERGENCY OPERATION OF AIR-CONDITIONER

1 : Green Led
2 : Yellow Led
3 : Red Led
4 : Remote control
signal receiver
5 : "Emergency" button
Indoor unit LED's
• GREEN LED (1) shows the following conditions :
- Fault codes (diagnostic);
- During normal operation, the LED is lit.
Once a failure occurs, the LED flashes at intervals of 0.5 seconds. The fault code is deduced from
the number of times the LED flashes. Between one flash cycle and the next a pause of 5 seconds
elapses.
If the timer mode is active and the unit is immediately restarted after a stop, this LED flashes until a
new signal is sent to the indoor unit.
• YELLOW LED (2) shows the operation in timer mode.
During this operation in this operating mode, the LED is lit .
If the time mode is active and the unit is immediately restarted after a stop, this LED flashes until a
new signal is sent to the indoor unit.
• RED LED (3) gives the following information:
- During normal operation, the LED is OFF;
- During defrost the LED is lit;
- During the test for wired connection, the LED
flashes at 1- second intervals.
Button (5) : "EMERGENCY"
Can be used when the remote control is lost or inoperative.
Use a screwdriver to press the push-button.
Emergency operation:
When the unit is in the OFF mode and the emergency is pressed for 5 seconds, the system will
operate as follows:
- Automatic mode.
- Temperature preset to 22ºC.
- Automatic fan speed.
- Louvers set automatically according to operating mode.
- Timer Functions are inactive.
When a signal is received by the remote control, system operates accordingly.
INDOOR UNITS 42VMC14-18-24-30-36 SERIES
12