![background image](http://html1.mh-extra.com/html/daikin/fhq100buv1b-x-2/fhq100buv1b-x-2_service-manual_2459261129.webp)
Test Run and Operation Data
SiBE28-804
118
Test Operation
Correlation of Air-
Conditioner’s
Operation Status
and Pressure /
Running Current
What happens in comparison to normal values is summarized in the table below.
(Measured from 15 ~ 20 minutes or more after operation starts.)
When Cooling
When Heating
Notes:
∗
1. Water in the refrigerant freezes inside the capillary tube or expansion valve, and is basically
the same phenomenon as pump down.
∗
2. Dirt in the refrigerant clogs filters inside the piping, and is basically the same phenomenon
as pump down.
∗
3. Pressure differential between high and low pressure becomes low.
Air-Conditioner Status
Low Pressure
High Pressure
Running Current
Air Filter Fouling
Lower
Lower
Lower
Short Circuit of Indoor Unit Inlet/
Outlet Air
Lower
Lower
Lower
Outdoor Unit Fin Fouling
Higher
Higher
Higher
Short Circuit of Outdoor Unit Inlet/
Outlet Air
Higher
Higher
Higher
Air Mixed in Refrigerant
Higher
Higher
Higher
Water Mixed in Refrigerant
∗
1 Lower
Lower
Lower
Dirt Mixed in Refrigerant
∗
2 Lower
Lower
Lower
Lack of Refrigerant (Gas)
Lower
Lower
Lower
Unsatisfactory Compression
∗
3 Higher
Lower
Lower
Air-Conditioner Status
Low Pressure
High Pressure
Running Current
Air Filter Fouling
Higher
Higher
Higher
Short Circuit of Indoor Unit Inlet/
Outlet Air
Higher
Higher
Higher
Outdoor Unit Fin Fouling
Lower
Lower
Lower
Short Circuit of Outdoor Unit Inlet/
Outlet Air
Lower
Lower
Lower
Air Mixed in Refrigerant
Higher
Higher
Higher
Water Mixed in Refrigerant
∗
1 Lower
Lower
Lower
Dirt Mixed in Refrigerant
∗
2 Lower
Lower
Lower
Lack of Refrigerant (Gas)
Lower
Lower
Lower
Unsatisfactory Compression
∗
3 Higher
Lower
Lower
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...