2.5
Protection Control Code on 7-Segment Display
(1) Protection control code is displayed on 7-segment when a protection control is activated. (2) Protection control code is displayed while function is working, and goes out when released. (3) When several protection control are activated, code number with higher priority will be indicated (see below for the priority order). (a) Higher priority is given to protection control related to frequency control than the other. <Priority Order> * Pressure Ratio Control * High-Pressure Increase Protection * Current Protection * Inverter Fin Temperature Increase Protection * Discharge Gas Temperature Increase Protection * Low-Pressure Decrease Protection * Reversing Valve Switching Control * Running Current Limit Control * High-Pressure Decrease Protection * Oil Return Control * Discharge Gas Superheat Decrease Protection (b) In relation to retry control, the latest retrial will be indicated unless a protection control related to frequency control is indicated. Code
Protection Control
Code
Protection Control
Pressure Ratio Control (*)
Low-Pressure Increase Protection
High-Pressure Increase Protection (*)
Pressure Ratio Decrease Retry
Current Protection (*)
Low-Pressure Increase Retry
Inverter Fin Temperature Increase Protection
High-Pressure Increase Retry
Discharge Gas Temperature Increase Protection (*)
Over Current Retry of Constant Compressor
Low-Pressure Decrease Protection
Vacuum/Discharge Gas Temperature Increase Retry
Reversing Valve Switching Control
Discharge Gas SUPERHEAT Decrease Retry
Oil Return Control
Inverter Trip Retry
High-Pressure Decrease Protection
Insufficient Voltage/ Excessive Voltage Retry
Demand Current Control
Fan Motor Controller Fin Temperature Increase Protection
Discharge Gas SUPERHEAT Decrease Protection
Fan Motor Controller Trip Retry
In the case that degeneration control is activated, c is indicated in stead of 0. (*mark)
â&#x20AC;˘ Retry indication continues for 30 minutes unless a protection control is indicated. â&#x20AC;˘ Retry indication disappears if the stop signal comes from all rooms. NOTE: The protection control code being indicated on 7-segment display is changed to an alarm code when the abnormal operation occurs. Also, the same alarm code is indicated on the remote control switch. 82