Author Topic: WS-1400-IP Humidity Sensor Failing, told not repairable  (Read 2530 times)

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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #25 on: June 22, 2017, 03:35:29 PM »
Is there are part number for the entire Temp/humidity sensor ... or does it have to be built in parts both the humidity and temp separate.  My new 1400's temp is dead one day and active but off the next day.  Was thinking of rebuilding it, but it would be easier just to do a plug and play with the combo rather than solder on the temp probe.

But basically ... I want to rebuild (or replace) the entire Temp / humidity Sensor.  As I read here ... If I want to rebuild it I will need ??? ...

Humidity Part

Temp Sensor Part
« Last Edit: June 22, 2017, 04:06:44 PM by MrM1 »

Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #26 on: June 22, 2017, 06:06:57 PM »
MrM1, I pulled up your graph from the 14th and all the graphs related to the ISS are missing information. The only graph that is correct is the Pressure which comes from the indoor unit. All the graphs from the ISS stop and start at the same time. To me, it looks like it is only sending data when the sun is getting to the Solar array providing power to the unit.
I would check the ISS batteries or replace them with standard alkaline ones for testing.
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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #27 on: June 22, 2017, 06:29:59 PM »
No it stopping because I move it inside so it doesn't get stolen because it's sitting at a table to look location down low. Everything is reporting but nothing moving because it's inside a building

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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #28 on: June 22, 2017, 06:31:20 PM »
It's just that my temperature and humidity have gone Flatline even sitting inside and even when I adjust the thermostat of the AC there is a movement

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Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #29 on: June 22, 2017, 06:53:25 PM »
If it is inside the batteries will not get charged. (I don't know how long they will last before needing a charge, they are Alkaline rechargeable ones). Try with normal alkaline batteries.
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Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #30 on: June 22, 2017, 08:44:21 PM »
It looks like the humidity and temperature stops reporting at the same time. It is highly unlikely that both will fail at the same time. Did you open the unit and check for a loose connection?
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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #31 on: June 22, 2017, 09:41:30 PM »
I did take it apart two  days ago (I had had the batteries out of it before that and that created the gap  from 6/19-21 ish) ... and while I did not physically see any loose connections,  When I removed the radiation sheila,  and put it back together,  and put batteries back it,  the Array  has been reporting every since.  It is inside right now and responding to AC temp changed.  IF you look at the dates from about 15 - 19 ... you see the flat lines at temp.  it was not reporting or responding,  but it I would move it or set it outside it would work, then bring it back in and it would go flat line.  It started when mounted on the roof on June 13-14.  The temp sensor went flat line from 7pm jun 13 to noon on jun 14.  I went up and took it down at AWs request to change the batteries. 

As to batteries,  that was the first thing that Ambient had me change as they say low batteries can cause temp drift.  So I have Energizer  e2 Lithium in it right now.  AW told me that is what to run in the array. And that it would not be hurt by the low charge of the solar panel.  And that they would last about as long at the stock rechargers. 
« Last Edit: June 22, 2017, 09:47:37 PM by MrM1 »

Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #32 on: June 23, 2017, 08:50:39 AM »
But if I want or need to rebuild the Temp / Humidity sensor... Will the part links I listed above be the correct parts?

The other thing I cannot understand is while either sitting outside or inside in a controlled room , why the humidity reading for the inside sensor and the outside sensor are very different.

Aren't the inside and outside modules using the same humidity sensor part?

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« Last Edit: June 23, 2017, 08:52:29 AM by MrM1 »

Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #33 on: June 23, 2017, 09:00:13 AM »
The temperature sensor is a NTC 10K @25C bead thermistor. I had a look at the link and could not see the % accuracy. My bet it is maybe a 5% or 10%. Find ones that are at least 1%.

As to the humidity sensor, it is only my guess that it is a HR202L. The specs match. Unfortunately not available in the US.

At one stage I was considering to ask for a show of hands how many members have problems with their humidity sensors. Then order a 10 pack and test to see if it works. If it does, send the rest to members.
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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #34 on: June 23, 2017, 09:12:08 AM »
I'm don't know how to test them. But it would b interesting.

I'm going to use a Boveda One-Step Hygrometer Calibration Kit to calibrate my humidity sensor from the dash board of the computer

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Offline CR1400IP

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #35 on: June 24, 2017, 08:36:53 AM »
Hello everyone
1) can we replace ntc thermostat with similar specification but of other type in our sensor array (1400 ip)
2) as per my discussion with ambient weather they used different themostats for different time period. (Mo number in battery compartment of sensor array)
3)my temprature readings getting stuck at 25.9 and 25.1 reflects sensor issue or processor issue any opinion on that.

Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #36 on: June 24, 2017, 10:17:14 AM »


3)my temprature readings getting stuck at 25.9 and 25.1 reflects sensor issue or processor issue any opinion on that.
As to your temp getting stuck, I have the same problem. It's like the array is sending a number, not the sensor is stuck. Mine may be a loose connection. Or a bad sensor.


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Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #37 on: June 24, 2017, 11:24:16 AM »
When my humidity sensor failed, I was going to add this to that little pcb in the rad shield to make future replacement easier. Ambient send me the complete harness with both sensors, so I did not do it.
Solder the header to the pcb and the sensors to the pins. You need 4 pins, but it is easy to cut.
When a sensor fails or go out of calibration, just plug and play. Might even have one or two spares.

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Offline MrM1

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #38 on: June 24, 2017, 12:20:47 PM »
Rather than replacing the temp / humidity sensor,  I am wondering if this would work.  Would "fix" my temp sensor and eliminate the need for a radiation shield fan improvement project.

https://www.wxforum.net/index.php?topic=32344.0

Offline CR1400IP

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #39 on: July 01, 2017, 02:10:13 AM »
Hi

Can we replace the existing type of bead thermistor on 1400ip with some other type of thermistor or it is technically not feasible.
Has anyone tried it.

Offline dupreezd

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #40 on: July 01, 2017, 06:42:32 AM »
CR1400IP, If you suggesting replacing it with something like a DHT or SHT type sensor, then the answer is no. Those are digital sensors.
You can however replace it with another bead with possibly better % accuracy. The beads are NTC 10k @ 25C.

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Offline Pooley

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Re: WS-1400-IP Humidity Sensor Failing, told not repairable
« Reply #41 on: July 17, 2017, 10:13:01 AM »
Those look good. I would go with better %. Also with a pack of 10, you can test them all and pick the best ones.  :-)

Just following up on this one. I ended up purchasing these replacement thermistors for my WS-1001 outdoor unit - http://www.ebay.com.au/itm/10pcs-NTC-Thermistor-10K-ohm-1-B3950-L75mm-Wired-/391827074025?

Got a friend of the old mans to solder them in and the unit is now measuring temps in a whole lot more accurate manner. Previously I was measuring up to 10C too high but now is reading a little low if anything. Will make adjustments to calibration from indoor unit and see what happens from there.

Thanks to @dupreezd for their invaluable advice with this  =D>

 

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