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Daikin Manuals
Heat Pump
RZQS71C7V1B
Service manual
Daikin RZQS71C7V1B Service Manual
R-410a, 50hz
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Cautions
Preface
Skyair Inverter GQI III Series
Part 1 General Information
Combination
Combination Overview
Combination Matrix
External Appearance
Model Name and Power Supply
Part 2 Specifications
Specifications
RZQ71C7, 100C7, 125C7 and 140C7 (Single Phase)
RZQS71C7, 100C7, 125C7 and 140C7 (Single Phase)
Part 3 Remote Controller
Wired Remote Controller
Features
Installation
Wireless Remote Controller
Features
Method of Operating Remote Controller
The INSPECTION / TEST Button
Maintenance Mode Setting
Operation of the Remote Controller's Inspection / Test Operation Button
Remote Controller Service Mode
Part 4 Functional Description
General Functionality
Functions of Thermistors
Forced Operating Mode (Emergency Operation)
Outdoor Unit Identification Function
Simulated Operation Function
Restart Standby
Automatic Restart
Using Conditions for Remote Controller Thermostat
Forced Thermostat off
Test Run Control
4-Way Valve Control
Pump down Operation
Defrost Operation
Freeze Prevention Function
PMV Control
Preheating Operation Control
Crankcase Heater Control
Indoor Unit Functional Concept
Thermostat Control
Drain Pump Control
Condensation Avoidance Control
Draft Avoidance Control 1
Draft Avoidance Control 2
Fan and Flap Operation
Indoor Unit Fan Control
Outdoor Unit Functional Concept
Function Outline in Cooling Mode
Function Outline in Heating Mode
Frequency Regulating Functions
Starting Frequency Control
Starting Control
General Frequency Control
Low Pressure Protection Control
High Pressure Protection Control
Discharge Pipe Temperature Control
Suction Pipe Superheat Protection Control (Heating Mode)
Inverter Current Protection Control
Protection Control by Overall Current
Inverter Cooling Fin Temperature Control
Pressure Difference Control
Oil Recovery Operation
Expansion Valve Regulating Functions
Expansion Valve Control at Startup
General Expansion Valve Control
Discharge Pipe Temperature Protection Control
Outdoor Unit Fan Speed Control
Part 5 Test Operation
Test Operation
Test Run Checks
Setting the Wireless Remote Controller
Field Settings
How to Change the Field Settings with the Wired Remote Controller
How to Change the Field Settings with the Wireless Remote Controller
Overview of the Field Settings on the Indoor Units
Overview of the Factory Settings on the Indoor Units
MAIN/SUB Setting When Using Two Remote Controllers
Setting the Centralized Group no
The Field Setting Levels
Overview of the Field Settings on the Outdoor Units
Overview of the Factory Settings on the Outdoor Units
Existence of DIP Switch and BS Button
Quiet (Low Noise) Operation
I-Demand Function
Setting for Low Humidity Application
Defrost Start Setting
Test Run and Operation Data
General Operation Data
Operation Range
Part 6 Troubleshooting
How to Handle Request for Maintenance
General Troubleshooting Flowchart
Troubleshooting Based on Equipment Condition
Overview of General Problems
Equipment Does Not Operate
Indoor Fan Operates, but Compressor Does Not
Cooling/Heating Operation Starts but Stops Immediately
After Unit Shuts Down, It Cannot be Restarted for a While
Equipment Operates but Does Not Provide Cooling
Equipment Operates but Does Not Provide Heating
Equipment Discharges White Mist
Equipment Produces Loud Noise or Shakes
Equipment Discharges Dust
Remote Controller LCD Displays "88
Swing Flap Does Not Operate
Procedure of Self-Diagnosis by Remote Controller
The Inspection/Test Button
Fault-Diagnosis by Wired Remote Controller
Fault-Diagnosis by Wireless Remote Controller
Remote Controller Display Malfunction Code and Contents
Troubleshooting by LED Indications
Troubleshooting by LED on the Indoor Units
Troubleshooting by LED on Outdoor Unit PC Board
Troubleshooting by Remote Controller Display / LED Display
Indoor Malfunctions
Outdoor Malfunctions
System Malfunctions
Overview of the Outdoor Safety Devices
Overview of the Indoor Safety Devices
A1" Malfunctioning Indoor PC Board
A3" Malfunction of Drain Water Level System
A6" Indoor Unit Fan Motor Lock
A7" Swing Flap Motor Malfunction / Lock
A8" Abnormal Power Supply Voltage
AF" Malfunctioning Drain System
AJ" Malfunctioning Capacity Setting
C1" Failure of Transmission (between Indoor Unit PC Board and Fan PC Board)
C4", "C9" Thermistor Abnormality
C6" Failure of Combination (between Indoor Unit PC Board and Fan PC Board)
CJ" Malfunctioning Remote Controller Air Thermistor
CC" Humidity Sensor System Malfunction
E1" Failure of Outdoor Unit PC Board
E3" Abnormal High Pressure (Detected by the HPS)
E4" Actuation of Low Pressure Sensor: Single Phase C Series
E5" Compressor Motor Lock
E7" Malfunction of Outdoor Unit Fan Motor
E9" Malfunction of Electronic Expansion Valve
F3" Malfunctioning in Discharge Pipe Temperature
H3" Malfunctioning HPS System
H9", "J3", "J5", "J6", "J7", "J8" Malfunction of Thermistor System
J1" Malfunction of Pressure Sensor
L1" Faulty Outdoor PC Board
L4" Radiation Fin Temperature Increased
L5" DC Output Overcurrent (Instantaneous)
L8" Electronic Thermal (Time Lag)
L9" Stall Prevention (Time Lag)
LC" Malfunction of Transmission System (between Control and Inverter PC Board)
P1" Open Phase or Power Supply Voltage Imbalance
P4" Malfunction of Radiator Fin Temperature Thermistor
PJ" Failure of Capacity Setting
U0" Gas Shortage (Malfunction)
U2" Abnormal Power Supply Voltage
U4", "UF" Malfunction of Transmission between Indoor and Outdoor Unit
UF" Malfunction of Transmission between Indoor and Outdoor Unit / Piping and Wiring Mismatch / Gas Shortage
U5" Malfunction of Transmission between Indoor Unit and Remote Controller
U8" Malfunction of Transmission between MAIN Remote Controller and SUB Remote Controller
UA" Malfunctioning Field Setting Switch
UC" Centralized Address Setting Error
Part 7 Appendix
Dimensions
Rzq71C7, Rzqs71·100C7V1B
Rzq100~140C, Rzqs125·140C7V1B
Installation and Service Space (RZQ100~140C7, RZQS125~140C7)
Non Stacked
Stacked
Multiple Rows
Piping Diagrams
Piping Symbol
Pair System
Twin System
Triple System
Double Twin System
Pipe Connection Diameters
Re-Using Existing Field Piping
Wiring Diagrams
Outdoor Unit
Switch Box Layout
Rzq71C7, Rzqs71·100C7V1B
Rzq100~140C7, Rzqs125·140C7V1B
PCB Layout
Rzq71C7, Rzqs71·100C7V1B
Rzq100~140C7, Rzqs125·140C7V1B
Part 8 Removal Procedure
Rzq71C7, Rzqs71·100C7V1B
Removal of Outside Panels and Related Parts
Removal of Propeller Fan and Fan Motor
Removal of Switch Box
Removal of PC Board Assy (1)
Removal of PC Board Assy (2)
Removal of PC Board Assy (3)
Removal of Low Pressure Sensor, Electronic Expansion Valve, and Others
Removal of Thermistor
Removal of Four Way Valve
Removal of Compressor
Rzq100~140C7, Rzqs125·140C7V1B
Removal of Outside Panels
Removal of Propeller Fan and Fan Motor
Removal of Switch Box
Removal of PC Board
Removal of Pressure Sensor, Electronic Expansion Valve, and Others
Removal of Thermistor
Removal of Four Way Valve
Removal of Compressor
Part 9 Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A)
Outline
Refrigerant Cylinders
Service Tools
Index
Drawings & Flow Charts
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Quick Links
1
Rzq71C7, 100C7, 125C7 and 140C7 (Single Phase)
2
Specifications
Download this manual
SiBE28 - 804
SkyAir
RZQ71C7V1B, RZQ100~140C7V1B,
RZQS71·100C7V1B, RZQS125·140C7V1B
R-410A
Heat Pump 50Hz
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Table of Contents
Troubleshooting
Part 6 Troubleshooting
132
How to Handle Request for Maintenance
134
Troubleshooting Based on Equipment Condition
135
Troubleshooting by LED Indications
163
Troubleshooting by LED on Outdoor Unit PC Board
164
Troubleshooting by Remote Controller Display / LED Display
165
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