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Overview of the heating mode functions
ESIE02–01
2–40
Part 2 – Functional Description
3
1
2
4
5
Starting and ending
conditions:
RY35-45E(A)Z7V1
Starting conditions
The defrosting starts when all of the following conditions are fulfilled:
■
The compressor has been running over 40 min
■
If Ta
≥
5˚C, outdoor heat exchanger temperature < -3˚C
■
Outdoor heat exchanger temperature < (Ta x 0,4) - 5˚C.
Ending conditions
The defrosting stops when one of the following conditions is fulfilled:
■
Defrosting has been running over 10 min, or
■
Outdoor heat exchanger temperature > 12.5˚C, or
■
High-pressure switch has been activated, or
■
Indoor unit has been switched OFF, or
■
Unit is in another mode than heating.
Hot start after
defrosting
The hot start function is activated:
■
40 s after the defrosting ending, or
■
When Tc > 34˚C (indoor heat exchanger temperature).
Used input
The defrost control uses the following inputs:
Input
Connection on
indoor PCB
Connection on
outdoor PCB
Outdoor thermistor
—
R1T
Outdoor heat exchanger thermistor
—
R2T
Discharge pipe thermistor
—
R3T
Defrosting start temperature changeover switch
—
DS1-2
Defrosting forced time changeover switch
—
DS2-1
Summary of Contents for FHC45BZ7V1
Page 1: ...ESIE02 01 Service Manual Sky Air R 407C B series SV p p p...
Page 2: ......
Page 3: ...ESIE02 01 Service Manual Sky Air R 407C B series SV p p p...
Page 4: ......
Page 16: ...Introduction ESIE02 01 xii 3 1 4 5...
Page 18: ...ESIE02 01 1 2 Part 1 System Outline 3 1 1 5...
Page 42: ...General Outline Outdoor Units ESIE02 01 1 26 Part 1 System Outline 3 1 1 4 5...
Page 49: ...ESIE02 01 General Outline Indoor Units Part 1 System Outline 1 33 3 1 4 5...
Page 72: ...General Outline Indoor Units ESIE02 01 1 56 Part 1 System Outline 3 1 1 4 5...
Page 86: ...Specifications ESIE02 01 1 70 Part 1 System Outline 3 1 1 4 5...
Page 110: ...ESIE02 01 1 94 Part 1 System Outline...
Page 130: ...Switch Box Layout ESIE02 01 1 114 Part 1 System Outline 3 1 1 4 5...
Page 180: ...PCB Layout ESIE02 01 1 164 Part 1 System Outline 3 1 1 4 5...
Page 182: ...ESIE02 01 2 2 Part 2 Functional Description 3 1 2 5...
Page 204: ...General Functionality ESIE02 01 2 24 Part 2 Functional Description 3 1 2 4 5...
Page 216: ...Overview of the cooling mode functions ESIE02 01 2 36 Part 2 Functional Description 3 1 2 4 5...
Page 232: ...ESIE02 01 3 2 Part 3 Troubleshooting 3 1 3 5...
Page 294: ...Error Codes System Malfunctions ESIE02 01 3 64 Part 3 Troubleshooting 3 1 3 4 5...