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SiBE28-804
Troubleshooting by Remote Controller Display / LED Display
Troubleshooting
181
5.20 “
E4
” Actuation of Low Pressure Sensor: Single phase C
Series
Remote
Controller
Display
E4
Applicable
Models
RZQ71~140C7V1B, RZQS71~140C7V1B
Method of
Malfunction
Detection
[In cooling]
Detect malfunctions by the pressure sensor (S1NPH).
[In heating]
Detect malfunctions by the heat exchanger distribution pipe thermistor (R4T).
Malfunction
Decision
Conditions
[In cooling]
When the detection pressure is the following value
0.12 MPa or less continues for 5 minutes
When the saturated pressure equivalent to the detection temperature is the following value
0.12 MPa or less continues for 5 minutes
Supposed
Causes
The stop valve remained closed
Faulty pressure sensor and intermittent harness
Faulty outdoor PC board
Abnormal drop of low pressure
(Inadequate refrigerant)
(Abnormal refrigerant piping system (liquid pipe system))
(Faulty electronic expansion valve)
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 ...