Table of Contents
Advertisement
Setting and Indication of the Control PCB
Indication
(1) Individual LED
1) Power (電源); 3 places
2) Hi
3) Lo
4) Alarm (警報)
5) Check (チェック)
6) Inverter 1 (インバータ1)
7) Defrost (霜取)
(2) Digital display
When the rotary switch (knob) is at the "Operation (運転)" position, the following 1) to 4) is displayed.
1) During normal operation
The digital display repeatedly indicate "Low pressure (MPa)
When Low pressure, High pressure, and Unit outlet pressure are less than 0.00MPa, the digital display indicates
"Lo", "Lo-H", and "Lo-o" respectively.
For identification purposes, "H" is added to the end of high pressure, and "o" to the end of unit outlet pressure.
(E.g.)
Low pressure
3 sec.
2) Alarm has occurred
The digital display alternates between "Low pressure (MPa)
Alarm code".
(E.g.)
Low pressure
3 sec.
3) Method of fixing indication of low pressure
Pressing
button during normal operation fixes the low pressure display for 10 minutes.
▼
Pressing
button again cancels the fixed display.
▼
Note: During alarm is generated, low pressure indication cannot be fixed.
4) The point at the lowest digit of the digital display (right bottom)
(Yellow)
Lights up when power is supplied to the PCB. (Main unit, electronic expansion valve, relay)
(Yellow)
Lights up when the low pressure is equal to the Control "ON value" or higher.
(Yellow)
Lights up when the low pressure is equal to the Control "OFF value" or lower.
(Red)
Lights up/blinks in the event of an anomaly or when an alarm condition is generated.
For details, refer to the "Explanations of Anomaly Alarm" in "About Alarms."
(Yellow)
Lights up: In the PCB check mode, or evacuation mode
Blinks: Slide switch SW 15 ("control/ check") is set to "check."
(Green)
Lights up during compressor operation.
(Green)
Lights up : Defrosting in operation
Blinks: In the evacuation mode, Electronic expansion valve in manual control
High pressure
3 sec.
High pressure
3 sec.
Blinks: Short cycle prevention function is
High pressure (MPa)
Unit outlet pressure
3 sec.
High pressure (MPa)
Unit outlet pressure
3 sec.
in operation (compressor stopped).
Unit outlet pressure (MPa)".
Unit outlet pressure (MPa)
Alarm code
3 sec.
28
Advertisement
Table of Contents
