B%26q Dehumidifier Wdh 930dah Manual

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  1. B 26q Dehumidifier Wdh 930dah Manual Pdf
  2. B 26q Dehumidifier Wdh 930dah Manual User

B 26q Dehumidifier Wdh 930dah Manual Pdf

I am repairing a dehumidifier which won't power on, and I've isolated the problem to missing 5v to the CPU. I found the diode which rectifies the 5v rail before the 7805 rectifier was short. Surprisingly, when I remove the bad diode and power up, I have 7.5Vac at the transformer output, so it would seem the shorted diode didn't damage anything else. With no power supplied to the unit and a 9v battery connected to the input of the 7805 via a 48 ohm series resistor the CPU powers up and displays information on the LCD, so that seems to prove the circuitry downstream.
The SMPS is a simple design with a LNK625 driving a small E16 transformer with a feedback winding and two secondaries. Both secondaries produce 7.5Vac. One output is rectified, smoothed and feeds the 7805, the other output is rectified, smoothed and goes .. nowhere. I'm tempted to steal the diode from this output as it appears the same type. Probably best not to just bridge the output across as the second output winding might be lower current. The transformer is marked HS20411/E16 CQC however I can't find any information about it.
The dehumidifier is Chinese manufactured and was sold in the UK by B&Q. The power board is labelled D2514-790.
Any thoughts appreciated.
Thanks
I am repairing a dehumidifier which won't power on, and I've isolated the problem to missing 5v to the CPU. I found the diode which rectifies the 5v rail before the 7805 rectifier was short. Surprisingly, when I remove the bad diode and power up, I have 7.5Vac at the transformer output, so it would seem the shorted diode didn't damage anything else. With no power supplied to the unit and a 9v battery connected to the input of the 7805 via a 48 ohm series resistor the CPU powers up and displays information on the LCD, so that seems to prove the circuitry downstream.
The SMPS is a simple design with a LNK625 driving a small E16 transformer with a feedback winding and two secondaries. Both secondaries produce 7.5Vac. One output is rectified, smoothed and feeds the 7805, the other output is rectified, smoothed and goes .. nowhere. I'm tempted to steal the diode from this output as it appears the same type. Probably best not to just bridge the output across as the second output winding might be lower current. The transformer is marked HS20411/E16 CQC however I can't find any information about it.
The dehumidifier is Chinese manufactured and was sold in the UK by B&Q. The power board is labelled D2514-790.
Any thoughts appreciated.
Thanks

B 26q Dehumidifier Wdh 930dah Manual User

Dehumidifier not producing water & room very humid? This video provides information on how a dehumidifier works and offers troubleshooting tips to assist you. Wdh-930ed r new widetech wide te ch dehumidifier conte nts thanks for your choosing glendimplex's dehumidifier. Before using it, please read thoroughly of this instruction manual. User's manual voltage ：220-240v/50hz war ning caution 1 description of components function e xplanation 2 ope r ation ins tr uctions 3 continuous dr ainage 4 5 6. Wdh-930ed r new widetech wide te ch dehumidifier conte nts thanks for your choosing glendimplex's dehumidifier. Before using it, please read thoroughly of this instruction manual. User's manual voltage ：220-240v/50hz war ning caution 1 description of components function e xplanation 2 ope r ation ins tr uctions 3 continuous dr ainage 4 5 6. Over time, the dehumidifier will create a more stable humidity in the area it is located. The more moisture the dehumidifier removes from the air, the more often you may have to empty the bucket unless you choose to use the continuous drain option. The number of times the bucket will need to be emptied daily will depend on the dehumidifier model. A dehumidifier’s fan must have electric power, the evaporator coils must contain a proper charge of refrigerant, and the controls must work for the dehumidifier to operate. In the same way that a thermostat controls a heater or air conditioner, a dehumidifier is cycled off and on by a humidistat that measures a room’s humidity.