![background image](http://html1.mh-extra.com/html/daikin/fhc45bz7v1/fhc45bz7v1_service-manual_2459255184.webp)
General Functionality
ESIE02–01
2–4
Part 2 – Functional Description
3
1
2
4
5
1.2
Functions of Thermistors: Small Heat Pumps
Locating the
thermistors
The thermistors on the illustration below are used to control the system. This control secures a proper
operation and prevents problems of the unit.
Functions of the
thermistors
The table below contains the functions of the small h/p.
1
2
3
4
Outdoor unit
Indoor unit
Ther-
mistor
Location
Wiring
symbol
Mode
Function
1
Indoor heat
exchanger
R2T
Cooling
Freeze-up thermostat
Heating
■
Hot start indoor fan
■
Peak cut-off
2
Indoor air
return
R1T
Cooling
Thermostat control
Heating
Thermostat control
3
Outdoor heat
exchanger
R2T
Cooling
Not used
Heating
■
Frost prevention and overload prevention
■
Defrost initiation and termination
4
Outdoor air
return
R1T
Cooling
Low ambient control
Heating
■
Frost prevention
■
Defrost initiation
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...