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Repair of air conditioning Tadiran in Jerusalem.

The Israeli company Tadiran specializes in the production of military equipment, communications systems and HVAC equipment. For ordinary citizens of Israel, Tadiran air conditioners are of particular interest. Due to their qualities, reliability and versatility, they have become popular throughout Israel. To select a suitable model, it is recommended to familiarize yourself with the range of climatic equipment.

The main malfunctions of air conditioners

When the air conditioner compressor starts and operates, a number of malfunctions may occur, which are manifested as follows: the compressor does not turn on (there is no characteristic buzz); compressor

does not turn on (characteristic buzz); the compressor starts up but operates in short cycles.

The compressor does not turn on (there is no characteristic hum) for the following reasons:

– Compressor delay on startup. It can reach 3 … 6 min;

– mismatch of the set temperature on the remote control to the temperature in the room. Check the value of the set temperature on the remote control. If it is lower than the room temperature, change the setting;

– mismatch in ambient temperature.

– faulty thermistors: defrosting; injection; suction and boiling points; capacitor. The malfunction of all thermistors can be caused by a break in the circuit: to find such a malfunction, first determine the resistance of the thermistors and then the value of its resistance. The presence of the contact of the thermistor with the control board is also determined and the control board itself is checked;

– compressor protection is triggered when the voltage deviation exceeds the set value, phase imbalance and phase failure;

– protection of the compressor is activated against incorrect phase switching (for a three-phase compressor);

– Incorrect installation of the room temperature thermistor or failure of the high and low pressure switches.

– malfunction of the starting capacitor;

– defective boards defrosting the external unit; outdoor unit; management.

Repairing air conditioners is very difficult. Modern technology is complex and troubleshooting is the job of true professionals. No need to engage in amateur activities, contact our Tadiran air conditioning service center in Jerusalem. We work all over Jerusalem. Just dial our number. The wizard will arrive at any time convenient for you. We provide pensioners with a discount. Warranty on all types of repairs up to 6 months.

The compressor does not turn on (there is a characteristic buzz) for the following reasons:

– malfunctions: starting capacitor; working capacitor; starting relay; jamming of the compressor. Signs: starting current values ​​exceed nominal ones, and measurements of resistance of electric motor windings

compressor show their serviceability. In this case, replace the compressor;

– the compressor crankcase is filled with liquid refrigerant. In the absence of a crankcase heater, an abnormal heater is installed. Check the possibility of formation of refrigerant condensate in the intake manifold at a low ambient temperature;

– the electrical protection of the compressor is triggered at the start of a characteristic buzz. Check the resistance of the motor windings with an ohmmeter, for which the power wires are first disconnected. The possibility of shorting the winding to the housing is checked with a megger meter;

– malfunction of the remote control. Symptoms: the system turns on from the emergency switch and does not turn on from the remote control.

2. The compressor turns on, but operates in short cycles for the following reasons:

– defective working capacitor;

– Fault protection: condenser fan; drainage pump;

– defective protective relay. Check the values ​​of the operating current of the compressor motor by current clamps. If the operating current

correspond to nominal; replace the protective relay; if the values ​​of the operating current of the compressor motor are higher than the nominal value, there is an inter-turn short circuit of the compressor motor windings. The compressor is replaced;

– actuation of the high pressure switch due to excessive condensation pressure caused by: a closed valve on the discharge line; idle condenser fan; excess refrigerant in the outdoor unit; non-condensing impurities in the capacitor; insufficient suction pressure when starting the chiller, which may be caused by: insufficient amount of refrigerant; lack of heat inflow to the evaporator of the refrigeration machine.

Do not puzzle over the repair of modern Tadiran air conditioners, you should contact us. A professional technician will come directly to your home. We work in all areas of Jerusalem. We provide a high level of service, replacement of parts, we guarantee the quality of work performed.

Lack of heat gain can be caused by:

– mechanical obstruction in the air flow path, malfunction of the air cooler fan

– if the voltage is balanced, then check the compressor windings;

Diagnostics of inverter air conditioners Adrian in Jerusalem.

They diagnose the operation of the compressor with an inverter, for which they turn on the inverter and measure the time until the inverter stops due to an increase in current. If the operating time is within 10 s, the fault is a short circuit in the compressor windings. If the inverter shuts down after 10 … 60 s, the compressor is jammed. If the inverter lasts 1 … 5 min, the fault should be sought in the hydraulic circuit of the chiller.

 Signs of excess refrigerant in the system may appear:

– in case of insufficient heat flow to the air cooler (mechanical obstruction to air flow, failure of the indoor unit fan, freezing of the evaporator, clogged air filters, build-up of bacterial mucus, insufficient heat flow to the indoor unit). In this case, the amount of overheating decreases, since the boiling process is difficult. Boiling occurs in the suction pipe and (or) in the compressor housing. Compressor housing temperature

goes down. Dew may appear on the compressor housing due to moisture condensation from the surrounding air or frost. The sound level from a running compressor decreases, the temperature of the discharge pipe decreases; with excessive cooling of the condenser. This mainly occurs when the chiller is turned on at lower ambient temperatures. Under these conditions, the amount of refrigerant in the condenser increases, the amount of supercooling at the outlet of the condenser increases. A significant portion of the refrigerant remains in the condenser. Condensing pressure decreases. The amount of refrigerant entering the air cooler is reduced. The suction pressure is reduced. Suction superheat increases. Noise from a running compressor motor increases;

– when non-condensing gases appear in the refrigeration machine. In the presence of a small amount of non-condensable gases in the system, part of the capacitor is occupied by these gases. The pressure in the condenser rises and the flow through the throttling element increases. The boiling pressure in the evaporator rises. Discharge temperature rises. The temperature of the compressor housing rises. Noise from a running electric motor increases. The value of the operating current increases.

goes down. Dew may appear on the compressor housing due to moisture condensation from the surrounding air or frost. The sound level from a running compressor decreases, the temperature of the discharge pipe decreases; with excessive cooling of the condenser. This mainly occurs when the chiller is turned on at lower ambient temperatures. Under these conditions, the amount of refrigerant in the condenser increases, the amount of supercooling at the outlet of the condenser increases. A significant portion of the refrigerant remains in the condenser. Condensing pressure decreases. The amount of refrigerant entering the air cooler is reduced. The suction pressure is reduced. Suction superheat increases. Noise from a running compressor motor increases;

– when non-condensing gases appear in the refrigeration machine. In the presence of a small amount of non-condensable gases in the system, part of the capacitor is occupied by these gases. The pressure in the condenser rises and the flow through the throttling element increases. The boiling pressure in the evaporator rises. Discharge temperature rises. The temperature of the compressor housing rises. Noise from a running electric motor increases. The value of the operating current increases.

the condenser is filled with non-condensing gases. In the initial period of compressor operation, the temperature on the discharge line and the condensation pressure increase sharply, but since there is nowhere to condense the refrigerant, a small amount of liquid refrigerant enters the evaporator. Evaporator temperature remains high;

– the presence of moisture in the system. If during installation the system was not drained, moisture remains in the system. Moisture can enter the system with air, as well as due to a violation of the drying technology of the motor windings at the compressor manufacturing plant. Violation of the technology for storing refrigeration oils leads to their moistening and, accordingly, to the appearance of moisture in the refrigeration system. Water is practically insoluble in refrigerants and oils used in air conditioners. During the circulation of moisture in the refrigeration machine, when the temperature in the throttling device decreases, the moisture may crystallize and clog the hole of this device (capillary tube, expansion valve). Our company is repairing gas leaks in Tadiran air conditioners in Jerusalem, replacing components with original spare parts, preventing Tadiran air conditioners and other brands, as well as eliminating any types of breakdowns. Contact us and you will not regret it.