Friedrich VERT-I-PAK VHA-09K25RTP User Manual

Name: Friedrich VERT-I-PAK VHA-09K25RTP
Brand: Friedrich
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103 pages

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61 PB

TROUBLESHOOTING

Electrical Troubleshooting Chart - Heat Pump

FIGURE 718 (TROUBLESHOOTING)

HEATPUMPMODE

Systemcoolswhenheatingis

desired

Islinevoltagepresent

atsolenoidvalve?

Isselectorswitchset

forheat?

IsroomTSTAT

configuredforB

signal?

YES

ConfigureTSTATfor

Bsignal

Isthesolenoidcoil

good?

YES

ReplaceSole noid

Coil

Isthereversingvalve

stuck?

ReplaceSole noid

Coil

YES

Table of Contents2
Introduction4
Important Safety Information4
Personal Injury or Death Hazards5
Operation of Equipment in During Construction7
Equipment Identification8
Model and Serial Number Location8
Model and Serial Number Information Is Found on the Manufacturer's DATA TAG, Located on the Front or Top8
Model Number Reference Guide9
Serial Number Reference Guide10
Specifications11
General Specifications11
Chassis Specifications 9K, 12K12
18K Dimensions13
Dimensions14
Electrical Data15
Electrical Requirements17
Electrical Ratings Table17
Supply Air Flow and Data19
Operation21
Electronic Control Board Features21
Electronic Sequence of Operation22
Compressor Lock out Time23
Cooling Fan Delay23
Heating Fan Delay23
Fan Speed Change Delay23
Room Air Sampling Feature23
Low Voltage Interface Connections23
Interface Connector Definitions23
Remote Wall Thermostat24
Remote Wall Thermostat Location25
Desk Control25
Auxiliary Fan Control25
Unit Heat Control Operation - Heat Pump with Electric Heat26
Refrigeration Sequence of Operation27
Remove and Install the Chassis29
Remove the Chassis29
Servicing / Chassis Quick Changeouts29
To Remove the Chassis from the Closet29
R-410A Sealed System Repair30
Refrigerant Charging31
Undercharged Refrigerant Systems32
Overcharged Refrigerant Systems33
Restricted Refrigerant System34
Sealed System Method of Charging/ Repairs35
External Static Pressure36
Checking External Static Pressure36
Explanation of Charts37
Indoor Airflow Data37
Ductwork Preparation37
Fresh Air Door38
Checking Approximate Airflow38
Electric Heat Strips38
Component Testing39
Hermetic Components Check39
Reversing Valve Description and Operation40
Testing the Reversing Valve Solenoid Coil41
Checking the Reversing Valve42
Touch Test Chart : to Service Reversing Valves44
Compressor Checks45
Compressor Replacement -Special Procedure in Case of Compressor Burnout48
Fan Motor49
Capacitors49
Heating Element and Limit Switch50
Heater Elements and Limit Switches' Specifications50
Drain Pan Valve52
Thermistor Resistence Values (this Table Applies to All Thermistors)53
Testing the Diagnostic Service Module54
Testing the Electronic Control Board54
Electronic Control Board Components Identification and Testing55
24K Indoor Blower Motor56
Troubleshooting57
Error Codes and Alarm Status57
Electrical Troubleshooting Chart - Cooling59
9K Btu, 12K Btu, & 18K Btu59
24K Btu60
Electrical Troubleshooting Chart - Heat Pump61
Troubleshooting Chart - Cooling62
Wiring Diagrams63
9-12K 208/230V63
9-12K 265V64
208/230V (2.5Kw, 3.5Kw, 5Kw)65
265V (2.5Kw, 3.5Kw, 5.0Kw)66
208/230V (7.5Kw)67
265V (7.5Kw)68
208/230V (2.5Kw, 3.5Kw, 5Kw)69
208/230V (7.5Kw and 10Kw)70
265V (2.5Kw, 3.5Kw, 5Kw)71
265V (7.5KW and 10KW)72
Parts Catalog73
12K Unit Assembly73
12K Refrigeration Assy76
12K 208/230V78
9K, 12K 265V80
18K Unit Assembly82
Unit Assembly84
24K Refrigeration Assembly86
Blower Assembly89
Blower Assembly91
230V Control Box93
230V Control Box95
265V Control Box97
265V Control Box99
Available Accessories101
Warranty102
Friedrich Authorized Parts Depots103

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Friedrich VERT-I-PAK VHA-09K25RTP Specifications

General

Brand	Friedrich
Model	VERT-I-PAK VHA-09K25RTP
Category	Fan
Language	English

Friedrich VERT-I-PAK VHA-09K25RTP User Manual

Table of Contents

Questions and Answers:

Friedrich VERT-I-PAK VHA-09K25RTP Specifications