Summary of Contents for Johnson Controls York YH9FYH12BAH-A-X
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SERVICE MANUAL High Wall Fixed R-410A 60Hz YH9FYH12BAH-A-X Read this manual before installation and operation Make sure that it is well kept for later reference...
Introduction 1. Introduction 1.2 Safety Cautions 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.
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Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
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Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
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Introduction Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire. Be sure to install the packing and seal on the installation frame properly. If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor.
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Introduction Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock. Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 M ohm or higher.
Specification 2 Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT n i l 3.51 Capacity rated Btu/h 12000 Power Consumption(Rated) 1.25 1.25 2.81 2.81 ³ 1.6*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions W*D*H 780×245×540 Packaged W*D*H 920×351×620 Dimensions 27.3 30.7 Sound level ELECTRICAL SPECIFICATIONS n i l...
Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type R410A Refrigerant charge 0.74 Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control Capillary liquid Piping connections 12.7 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max.
Wiring diagrams 6.Wiring diagrams NOTE: 1.See above for wiring of heat pump type. 2.There are no dotted lines on cool only type.(marked with @ ),Wire is connected from 4 (marked with @ @ )on terminal block to 1. 3.Some of cool only type terminal block only have 1 2 and but no the parts...
Installations 9.Installations Preparation Selection of Installation Place Necessary Tools for Installation Appliance accessible to the general public. Torque wrench Driver Indoor Unit (17mm,22mm,26mm) Nipper Place, robust not causing vibration, where the body can be supported suf ciently. Hacksaw Pipe cutter Place, not affected by heat or steam generated in the vicinity, where inlet and outlet of the Hole core drill Flaring tool...
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Installations Installation of the Indoor Unit Drawing of pipe 184.3 184.3 [ Rear piping ] Floor fixing dimensions Floor fixing dimensions of the outdoor unit Draw pipes and the drain hose, then fasten them with the adhesive tape of the outdoor unit (Unit:mm) (Unit:mm) ・...
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Installations Outdoor unit Installation of Outdoor Unit Power cable: Drawing for the installation of indoor and outdoor units Install according to 3G2.5mm Connection of pipes -mod 3G2.5mm To bend a pipe, give the roundness as large as possible not to crush the pipe , Indoor unit and the bending radius should be 30 to 40 mm or longer.
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Installations No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If Please install the drain hose so as to be downward slope without fail. leakage stops, then proceed 6. steps Please don’t do the drainage as shown below. If it does not stop gas leakage, discharge whole refrigerants from the service port.
Service diagnosis 10.Service Diagnosis 10.1 Problem Symptoms and Measures Symptom Check Item Details of Measure Check to make sure that the rated voltage is Check the power supply. None of the units supplied. operates Check the indoor PCB Check to make sure that the indoor PCB is broken Equipment operates but does Diagnosis...
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Service diagnosis 10.3 Error Codes and Description indoor display Code indication Reference Description Page indoor Room temperature sensor failure u l i Indoor Malfunction The code indication that is listed above is the main fault 10.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure...
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Service diagnosis Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The relationship between normal temperature and resistance is shown in the value of indoor thermistor. 10.3.2 EEPROM abnormal E4: indoor EEPROM error Indoor Display Method of...
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Service diagnosis Pull out the terminals on the indoor Check whether terminals mainboard and reinsert them. on indoor pcb is well? Electrify the machine again and turn it on in the cooling operation, Measure voltage between the positions 1and 3 of Terminal CN5 on the indoor PCB the voltage is about 90-220vac Measure whether there is voltage pulse(0-5VDC)