Daikin ALTHERMA HT ERSQ 011 AA - Introduction; Safety Cautions; Caution in Repair

Introduction ESIE09-08A
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1. Introduction
1.1 Safety Cautions
Cautions and
Warnings
 Be sure to read the following safety cautions before conducting repair work.
 The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items
are especially important since they can lead to death or serious injury if they are not followed closely.
The “
Caution” items can also lead to serious accidents under some conditions if they are not
followed. Therefore, be sure to observe all the safety caution items described below.
 About the pictograms
This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown inside or near the symbol.
 After the repair work is complete, be sure to conduct a test operation to ensure that the equipment
operates normally, and explain the cautions for operating the product to the customer
1.1.1 Caution in Repair
Warning
Be sure to disconnect the power cable plug from the plug socket before disassembling
the equipment for a repair.
Working on the equipment that is connected to a power supply can cause an electrical
shock.
If it is necessary to supply power to the equipment to conduct the repair or inspecting
the circuits, do not touch any electrically charged sections of the equipment. Be careful
as the capacitors (top surfaces) can hold up to 220V.
If the refrigerant gas discharges during the repair work, do not touch the discharging
refrigerant gas.
The refrigerant gas can cause frostbite.
When disconnecting the suction or discharge pipe of the compressor at the welded
section, release the refrigerant gas completely at a well-ventilated place first.
If there is a gas remaining inside the compressor, the refrigerant gas or refrigerating
machine oil discharges when the pipe is disconnected, and it can cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The refrigerant
gas can generate toxic gases when it contacts flames.
The step-up capacitor supplies high-voltage electricity to the electrical components of
the outdoor unit and indoor unit.
Be sure to discharge the capacitor completely before conducting repair work.
A charged capacitor can cause an electrical shock as the capacitors (top surfaces) can
hold up to 220V.
Do not start or stop the heat pump operation by plugging or unplugging the power cable
plug.
Plugging or unplugging the power cable plug to operate the equipment can cause an
electrical shock or fire.