What happened to Hitachi air conditioner p 17?

What are the faults of Hitachi air conditioner p 17?

Hitachi air conditioner display fault P 17 is a frequency converter fault.

2. It is recommended to replace the frequency converter. Pay attention to whether the main circuit of the inverter matches when replacing. Divided into voltage type and current type. Ordinary air conditioners adopt voltage type.

Second, Hitachi air conditioning display p 17 solution.

Check whether the outdoor maintenance valve is fully opened.

Check the blockage of outdoor PMV.

Detect the resistance characteristics of TD2 sensor.

Check the four-way valve for errors.

Check SV42 circuit for leakage.

7. Check the SV4 circuit (SV4 1 and SV42 are not connected correctly).

Daily maintenance methods of Hitachi air conditioner.

1. Maintenance before startup.

Generally, household air conditioners are turned on and off in September, and they are turned on and off for more than half a year from May to June of the following year. Therefore, before starting the air conditioner, it is necessary to conduct a comprehensive diagnosis and check whether the air conditioner is faulty. According to the inspection results, under the guidance of professional and technical personnel, do a good job of maintenance and cleaning, including the casing, fuselage and filter screen of outdoor and indoor units, and then start trial operation to observe the cooling speed and effect.

There are ingenious ways to maintain the air conditioner correctly.

2. Maintenance during startup.

The start-up of air conditioning depends on many factors, such as environmental conditions, climate conditions, start-up time, surrounding dust, air cleanliness, whether the room is clean and so on. Poor environmental conditions, hot weather, outdated air conditioners, long start-up time of air conditioners, and increased maintenance times, generally once a month and a half. If the environmental conditions are good, the air conditioner is updated, and there is less dust in the air, the air conditioner can be turned on reasonably, and it can be used alternately with the electric fan, and the maintenance cycle can be extended appropriately, from the air conditioner on to the air conditioner stop 1-2 times. Maintenance should be careful and meticulous, leaving no dead ends. Meet the specifications, improve the cooling speed and cooling effect, and achieve energy saving, freshness and comfort.

3. Maintenance after downtime.

It is a perennial law to turn on the air conditioner when the weather is warm and turn off the air conditioner when the weather is cold. Pay attention to the comprehensive and detailed inspection of outdoor units and indoor units before the air conditioner is turned off. Maintenance, maintenance and cleaning should be done one by one, and cannot be separated. Easy-to-leak links should be tightened and strictly checked. After completing the above steps, install the air conditioner cover to prevent dust pollution, prevent the air conditioner from dripping, keep it clean, and prepare to use it again next year.