Outdoor Unit - Daikin RZQ Series FCQ20EVA Service Manual

SiME281501E
4.2

Outdoor Unit

4.2.1 Abnormal Stop (Retry Control)
When the following items show abnormal values, the thermostat turns OFF and error is determined based on
the number of retry in order to protect the compressor and other devices.
Item
Low pressure
High pressure
Discharge pipe temperature
Power supply
4.2.2 Restart Standby
To prevent compressor from frequent ON/OFF and equalize pressure in refrigerant line, conducts forced
thermostat OFF for 3 minutes after compressor stops. Moreover, outdoor unit fan conducts residual operation
for a period of time to expedite equalization and prevent refrigerant from entering in evaporator.
RZQ20/24LVA
Compressor
Electronic
expansion valve
Outdoor unit fan
RZQ36/45LVA, RZQ45/48MYL
Compressor
Electronic
expansion valve
Outdoor unit fan
Function and Control
0.12 MPa or less continues for 5 minutes
OCP2 activated or over 3.92 MPa continues for 1 minute 15 times in 300 minutes
Temperature over 115°C continues for 10 minutes or
temperature exceeds 135°C
Reverse phase power supply
Thermostat OFF
ON
OFF
Operation
complete
300 pls
Cooling
Heating
60 sec. 60 sec.
ON
Residual operation
For 3 min.
Thermostat OFF Restart standby complete
ON
OFF
Operation
complete
166
130
Cooling
110
10 sec. 30
30 30
sec. sec. sec.
Heating
0
ON
OFF
Residual
operation
For 3 min.
Criteria
Restart standby complete
⎫
⎪
⎪
⎪
⎪
480 pls
⎪
⎪
⎪
⎪
Moves to "Stop" or "Starting control"
⎬
after completion of "Restart standby".
⎪
⎪
30 30
⎪
⎪
sec. sec.
⎪
⎪
⎪
OFF
⎪
⎭
⎫
⎪
⎪
⎪
⎪
⎪
⎪
0
⎪
87
⎪
Moves to "Stop" or "Starting control"
⎬
after completion of "Restart standby".
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎪
⎭
Function Details
Number of retry
10 times in 200 minutes
10 times in 200 minutes
None (No retry)
32