Error Codes: Outdoor Units
ESIE05-03
3–92
Part 3 – Troubleshooting
3
1
3
4
5
3.22
Gas Shortage (Malfunction) (
U0
)
Remote Controller
Display
U0
Method of
Malfunction
Detection
(In test operation)
Detection by closed stop valve.
(In normal operation)
Gas shortage is detected according to the electronic expansion valve opening degree and measured
temperatures and pressures.
Malfunction
Decision
Conditions
(In test operation)
Variations of the indoor unit heat exchange temperature judge whether stop valve is open or closed.
(In cooling operation)
When the electronic expansion valve opens fully and low pressure is below 0.1 MPa continuously for
30 minutes.
(In heating operation)
When the electronic expansion valve opens fully and the suction superheat is large (more than 20°C)
continuously for 30 minutes.
Supposed Causes
P
The stop valve is left in closed.
P
Insufficient refrigerant amount
P
Clogged refrigerant piping system
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Is the
refrigerant amount
appropriate?
Is the stop valve open?
NO
YES
NO
YES
∗
For RZQ71 ~ 140 models, gas shortage alarm is indicated but operation continues.
Open the stop valve.
Collect refrigerant. After vacuum drying is
complete, charge an appropriate amount of
refrigerant.
Check the refrigerant piping system for clogging.
Check 5.9.1
ESIE05-03.book Page 92 Wednesday, April 6, 2005 4:09 PM
Содержание RZQ100B7W1B
Страница 1: ...Service Manual ESIE05 03 RZQ71 125B8V3B RZQ100 140B7W1B Sky Air Inverter R 410A B series...
Страница 2: ......
Страница 10: ...ESIE05 03 viii Table of Contents 3 1 4 5...
Страница 24: ...ESIE05 03 1 2 Part 1 System Outline 3 1 1 5...
Страница 32: ...General Outline Outdoor Units ESIE05 03 1 10 Part 1 System Outline 3 1 1 4 5...
Страница 42: ...Specifications ESIE05 03 1 20 Part 1 System Outline 3 1 1 4 5...
Страница 56: ...Functional Diagrams ESIE05 03 1 34 Part 1 System Outline 3 1 1 4 5...
Страница 58: ...ESIE05 03 1 36 Part 1 System Outline...
Страница 70: ...Wiring Diagrams ESIE05 03 1 48 Part 1 System Outline 3 1 1 4 5...
Страница 84: ...PCB Layout ESIE05 03 1 62 Part 1 System Outline 3 1 1 4 5...
Страница 86: ...ESIE05 03 2 2 Part 2 Functional Description 3 1 2 5...
Страница 110: ...General Functionality ESIE05 03 2 26 Part 2 Functional Description 3 1 2 4 5...
Страница 150: ...ESIE05 03 3 2 Part 3 Troubleshooting 3 1 3 5...
Страница 188: ...Troubleshooting ESIE05 03 3 40 Part 3 Troubleshooting 3 1 3 4 5...
Страница 264: ...Additional Checks for Troubleshooting ESIE05 03 3 116 Part 3 Troubleshooting 3 1 3 4 5...
Страница 266: ...ESIE05 03 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Страница 306: ...ESIE05 03 5 2 Part 5 Disassembly and Maintenance 3 1 5...
Страница 320: ...Disassembly and Maintenance Outdoor Units ESIE05 03 5 16 Part 5 Disassembly and Maintenance 3 1 5 5...