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Friedrich
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VRP Series
Friedrich VRP Series Service & Parts Manual
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105
PB
C
OMPONENTS TESTING
Thermis
tor Location
s
T1 (Evaporator Coil In Sensor)
T5 (Evaporator Coil Out Sensor)
T
o acces
s the evapor
ator coil sensors remove the top panel and right side upper panel
.
The top sensor is T
5 ( Evap. C
oil Out)
The lower sensor i
s T1 ( Evap. C
oil In.)
Figur
e 621 (
Th
er
mist
or L
oc
atio
ns)
104
106
Table of Contents
Table of Contents
2
Introduction
5
Part Load Performance
6
VRP® Variable Speed System Vs. Fixed-Speed System
7
Freshaire™ Conditioned Fresh Air
8
Reheat Coil - Augments Vrp's Dehumidification Capability
9
Important Safety Information
10
Personal Injury or Death Hazards
12
Model and Serial Number Identification Guides
13
Specifications
14
Cooling Performance
14
12K/24K Extended Cooling Performance Data
15
And 24K Extended Heating Performance Data
16
Air Flow Data -12K and 24K
17
Electrical Data
18
12K and 24K Unit Dimensional Data
19
12K and 24K Unit Installation Dimensional Data
20
12K and 24K Accessories Dimensional Data-Louvers & Return Access Door
21
12K and 24K Accessories Dimensional Data - Wall Plenums
22
Operation
23
Sequence of Operations
23
Freshaire Control
24
Component Identification
25
Indoor Coil 12 & 24K
26
Indoor Blower
27
Outdoor Coil
28
Outdoor Fan
29
Compressor
30
Electric Heater
31
Electronic Expansion Valve
32
4-Way Reversing Valve
33
Remaining Components (Side View)
34
VRP Control Boards
35
Main Controller
36
Compressor Control
37
EEV Control
38
Reheat Control
39
Installation
40
VRP Required Minimum Clearances
41
Installation Orientations 12&24K
42
Exterior Wall Opening Dimensions 12 &24K
43
Interior(Closet) Wall Opening Dimensions 12 & 24K
44
Preliminary Plumbing
45
Wall Plenum Installation 12 & 24K
46
Louver Installation
50
Final Wall Plenum and Architectual Louver Installation
51
Unit Installation
52
Final Unit Installation Overview
53
Side Configuration Installation
54
Unit Drain Installation
55
Ductwork Installation
56
Wall Controller Installation 12 & 24K
57
Return Air Door Installation12 & 24K
60
Freshaire System Set-Up and Operation
61
Final Installation Checklist
62
Troubleshooting
63
VRP Troubleshooting Map
63
Required Tools
64
Required Skills
65
Troubleshooting by Rule out Methodology
65
Diagnostic Codes
66
Check for Power
70
Diagnostic Code (Temperature Based)
71
R-410A Sealed System Repair
72
Refrigerant Charging
73
Undercharged Refrigerant Systems
74
Overcharged Refrigerant Systems
75
Restricted Refrigerant System
76
Sealed System Method of Charging/ Repairs
77
Compressor Replacement
78
Compressor Replacement -Special Procedure in Case of Compressor Burnout
79
Replace the Reversing Valve
80
Replace the Condensor Coil 12K/24K
81
Replace the Evaporator Coil 12K/24K
82
Replace the Evaporator Coil Drain Pan
83
Component Testing
84
Electronic Expansion Valve (EEV)
84
Reversing Valve Description and Operation
85
Testing the Reversing Valve Solenoid Coil
86
Checking the Reversing Valve
87
Testing the Reheat Valve Solenoid Coils
88
Touch Test Chart : to Service Reversing Valves
89
Compressor Checks
90
Check the Outdoor Fan 12K
91
Replace the Outdoor Fan 12K
92
Check the Indoor Fan
93
Replace the Indoor Fan 12K/24K
94
Check the Heating Elements
95
Replace the Heating Elements
96
Driver Board Pin out
97
Driver Board Replacement
98
Check RS-485 Converterboard
99
Fmc Board Pin out
100
FMC Board Replacement
101
Heater Board Pin out
102
Heater Board Replacement
103
Thermistor Locations
104
T8 (Return Air Sensor)
104
T1 (Evaporator Coil in Sensor)
105
T5 (Evaporator Coil out Sensor)
105
T9 (Discharge Air Sensor)
106
T2 (Liquid Heat)
107
T6 (Liquid Cool)
107
T10 (Outdoor Ambient Air Sensor)
108
T7 (Cond. Coil Sensor)
109
T4 (Comp. Discharge)
110
T3 (Comp. Suction)
111
Thermistor Part Numbers
112
Replace Transformer
113
Check High and Low Pressure Limit Switches
114
Check Basepan Heater
115
Updating Vrp Firmware
116
FMC Manual Update Process - Remove SD Card from FMC Load on a PC or Laptop
116
FMC Update Process - Delete Current Files or Format SD Card
117
FMC Update Process - Unzip Files to Blank or Formatted SD Card
118
FMC Update Process - Verify Files on SD Card Drive
119
FMC Update Process - Loading New Firmware
119
Wiring Diagrams
120
Btu (E Models) (208/230V 2.5, 3.4, & 5.0 Kw)
120
BTU (E MODELS) (265V 2.5, 3.4, & 5.0 Kw)
121
Parts Catalog
122
E Models (Unit Assembly)
122
12K E Models Basepan
132
E Models (230V Electrical Controls)
133
E Models (265V Electrical Controls)
135
Accessories
137
Accessories
138
Wall Controller/ Thermostat
138
Installation Accessories and Descriptions
139
Appendix
141
Thermistor Values
141
CUSTOMER SATISFACTION and QUALITY ASSURANCE
143
Friedrich Authorized Parts Depots
143
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Friedrich VRP Series Specifications
General
Brand
Friedrich
Model
VRP Series
Category
Heat Pump
Language
English
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