A cold wave a year ago brought a lot of trouble, solar water pipes frozen hot water can not come down, 2 watering water guns froze crack, air conditioning fault alarm can not be started. Contact the maintenance staff, they say that they are too busy and have to wait in line until the next day. It seems that a lot of people have been recruited in this cold wave. It is worried that the circulating pump of the air conditioner will not work, and the continuous low temperature will freeze the water storage tank, Peng expansion tank and other components, resulting in greater losses, especially after a cold night, so just try to solve it yourself.
Fault phenomenon: the control panel fault alarm is displayed continuously, check the fault code for flow fault, and the air conditioner can not start. Check that the four pressures of the circulating water pressure gauge are normal, and there is no blockage after removing the filter screen. After cleaning and releasing water, the water supply system quickly recovers the water pressure. It seems that it is not the problem of the flow rate itself, then it may be a false alarm. Therefore, it is judged that the flow controller is not working properly.
Target flow controller.
Open the outer cover, there is a circuit diagram inside, take a look, the lower half of this game is a set of lever mechanism, control the upper part of a fretting switch, one has three terminal posts, the lever has no action state 1-2 long pass, 1-3 long break, when the flow in the water pipe increases, change the switch state through the lever mechanism to move in reverse.
Remove the above two screws and remove the upper cover with the schematic diagram, you can remove the microswitch and measure with the meter. 1-3 is normal, while 1-2 does not work regardless of whether the switch is active or not, and the fault is determined. During the measurement, it is found that the schematic diagram is also a pit, and the order on the diagram is 123, while the actual order on the switch is 132.
As a simple tool, this small ammeter is 30 years old and a 9-volt battery has been used to this day.
Switch model.
Go to Xinjiekou to buy back the same type of microswitch and install it to restart the air conditioner, so the barrier code disappears.
The start-up is normal, the circulating pump is running, the firepower of the two compressors is fully on, and the circulating water temperature begins to rise. no, no, no. no, no, no.
The circulating water temperature has risen to 44 degrees, leaving one to maintain.
The water temperature drops below 40, the second compressor starts again, the room temperature rises to 14 degrees, and everything is fine.
It cost a total of 8 yuan plus the cost of taking the subway back and forth. If the maintenance personnel come, the initial door-to-door fee is 200, and the replacement is calculated separately. It is not too much to charge you more than 100 for a flow switch. I wanted to buy an extra spare, but this was the only one I had. This kind of switch is only half the price if you buy it online.
The hot water in the solar water heater finally came down yesterday.
The temperature of the water is 92 degrees, so you can make tea.
This cold wave has discarded the outdoor flower sprinklers on the terrace and the garden. Next time, they should be unloaded and put inside the room. It is very convenient to unload the quick connection interface.
The following is taking pictures on the way to Xinjiekou to buy accessories.
Red lanterns have been hung at the gate of the community to welcome the New year.
Take Metro Line S1 to Metro Line 3 and get off at Dahanggong Station and pass the gate of Yunjin Museum. Cultural walls and sculpture sketches on the south side of Changjiang Road.
On the sidewalk of Changjiang Road, the road shaded by the building is full of ice.
When did the isolation pier on the side of the Yangtze River be replaced with white marble? It is also engraved with the unique logo of Changjiang Road.
The Jinsheng Electronics Plaza has been closed for decoration and changed to Hualong Electronic Mall next to the Central Hotel, which is only a few hundred meters away before it closes at 5 o’clock.
Deckie…
There is a showroom for Xilai cars downstairs of the Central Hotel.
In the small square of Deji, there is still a Christmas tree.
Successfully buy the necessary accessories and transfer to Metro Line 1 to Line S1 back. Xinjiekou in the evening.
Jinling Hotel and Deji Mansion.
The old building of Jinling Hotel in on the left and the new building on the left.
I always feel a little dizzy every time I go to the underground turntable at Xinjiekou.
TiffanyFrank 
4 
September 15, 2024 
