wh7016c Programming

[Beltran]

Hello fellow brewers I'm almost done with my first keezer build and I wanted to see if any one has used a WH7016C, I ordered the Fahrenheit one but I think they sent me the Celsius on . I see a C on the top right hand corner and the display temp shows XX.X I can push the SET button for 3 sec. and get to the HC display choose C and move the temp ( I'm guessing) 25-70 once I hit set it goes back to Celsius XX.X. my question is anyone know how to keep the display on Fahrenheit? I down loaded the manual http://lizardssnakestarantulas.co.za/wp-content/themes/shopperpress/thumbs/load.pdf
but I don't see where I can change it.

Also should I leave all the other settings as default ?
Delay /UP & lower temps/ect.

Thanks

 

[day_trippr]

- That model is strictly Centigrade.
- All values and settings are in Centigrade. Always and forever.
- The HC parameter selects between Heating and Cooling mode, and has nothing to do with changing from Centigrade to Fahrenheit.

As for the default settings:
- you might want to change the Hysteresis (parameter D) to something tighter than 5° C.
- you should change the Delay Time (parameter PT) to something much greater than the 1 minute default setting, to protect your compressor from cycling.
- you definitely need to calibrate the probe, thus you may have to change the Temperature Calibration (parameter CA).

Cheers!

 

[Beltran]

Thank you day trippr for the quick response, Well I guess I'm stuck with the Centigrade, I ready have it mounted in my keezer

when you say
The HC parameter selects between Heating and Cooling mode, and has nothing to do with changing from Centigrade to Fahrenheit.

why does the number go to Fahrenheit? I was trying to set my temp low @42F High @44That means I should see low (6C) high (7C).

 

[day_trippr]

Curious what makes you think you're seeing "Fahrenheit" just because you can set large values. The specs for that controller claim a working range from -50°C through +110°C.

This is a better user guide than the one you referenced...

http://www.biopowered.co.uk/w/images/8/88/WH7016C_instructions.pdf

Cheers!

 

[Beltran]

Well Im not use to seeing temp in C. only F. I'm still learning here When I came home I had the unit powered off but my freezer was still running . looks like I have another issue. here's my settings and how I have it wired could you tell me what I did wrong?

Temp Diff: 17 ( think I need to adjust this since the compressor is constantly running)
Temp Cal: 8 ( think I need to adjust this since the compressor is constantly running)
Delay : 5
Lower Limit :07C ( target 42F)
High Limit : 05C (target 44F)
AL :Same as LL
AH :Same as HL

 

[day_trippr]

Temp Diff: 17
Temp Cal: 8
Delay : 5
Lower Limit :07C ( target 42F)
High Limit : 05C (target 44F)
AL :Same as LL
AH :Same as HL

Holy cow!

Disconnect your poor freezer from that controller immediately before you kill the thing!

First, are you absolutely certain you have a WillHi WH7016C?
I cannot find any WH7016C user guide (and I've looked at many tonight) with Alarm Low and Alarm High settings (AL/AH, respectively).
Not saying it isn't possible, but I can't find anything that vouches for that.

Otherwise:

- LL and HL are not actual temperature settings, they are LIMIT settings that govern the allowable temperature setting RANGE. You could have left the default settings (-50 and 110) alone without having any operational effect. I suggest you at least set them to 0 and say 60, respectively. Or even better, back to their default settings. And then give them a good ignoring from now on.

- You should set the CA (Tamperature Calibration) to back to the default of ZERO until you take the time to calibrate the temperature probe. Setting it to anything else makes ZERO sense. Setting it to 8 is telling the controller that the probe is needs almost 15°F of positive correction! It's no wonder the freezer is always running!

- The Temperature Differential (D) should be something quite small - like 2. Setting it to 17 tells the controller to allow the temperature to drift up as high as 30 degrees ABOVE THE SET POINT before turning on the compressor.

- The Low and High Alarms (AL and HL, respectively) should be set to bracket your expected operating temperate, with some guard-band.

For instance, if you want to run at 39°F (~ 4°C) with ~ 3.6°F (2°C) differential, and you want to sleep at night, you would set the Low Alarm to something smaller than 4 - like, say 1; and set the high alarm to something larger than 6 - like, say, 8.

- The one thing you didn't include is the actual Set Point - the temperature setting that the controller should shut off the chiller. It should be set to something like 4, which would be a target temperature of 39°F.

The wiring looks correct - for an actual WH7016C...

Cheers!

 

[Beltran]

I wish this things had better writting on how to program them . Very confusing. But i still have a question my settings were on default and the unit was powered off but when i got home the freezer was running . Made the changes freezer kept dropping. Started looking for a new wire diagram .

 

[day_trippr]

Until one of us could find a manual that actually covers the settings you've apparently found on that unit, I have no idea what it might have been set to do out-of-the-box. And so far I can't find anything that vouches for the AL/AH on a wh7016c, which makes everything suspect.

Again, if you have an actual wh7016c, your wiring diagram is correct.
If you actually wired it the way you documented it, you don't have a wiring problem, you have a settings problem...

Cheers!

 

[Beltran]

This is all I can find on it too . I have the paper that came with it as well

http://www.jimsbeerkit.co.uk/forum/viewtopic.php?f=6&t=43118&start=90

Menu code selection
Symbol Details Setting range Factory settings Unit
HC Heating / cooling H/C C
D Hysteresis 0.10 -- 15 1 *C
LS Lowest setting limits -9.9 -- 99.9 -9.9 *C
HS The maximum limit set -9.9 -- 99.9 99.9 *C
CA Temperature correction -5 -- 5 0 *C
PT Cooling Delay Start 0 -- 10 1 Min
AH Low-temperature alarm output 0 -- 15 1 *C
AL High-temperature alarm output 0 -- 15 1 *C

 

[Beltran]

I'm not sure on the "SET Point" you are referring to ?

The one thing you didn't include is the actual Set Point - the temperature setting that the controller should shut off the chiller. It should be set to something like 4, which would be a target temperature of 39°F.

Looking at the manual from above all I see about SET is
-----------------------------------------------------------------
2. SET:
A: Press the SET key once to enter the temperature control setting, press
▲ or ▼ button to adjust, press ▲ or ▼ button for three seconds and hold
to enter the fast adjusting mode, press the SET key again to exit setting
mode.
B: Press and hold SET key for three seconds to enter the system menu
settings, press the ▲ or ▼ key to select the adjustment menu, press SET
key once to enter the appropriate parameter settings, press ▲ or ▼ to
adjust the parameters needed to be modified, after being adjusted, press
the RST key to exit, or exit as the system delay for 5 seconds.
▲: Up key
▼: Down key

 

[day_trippr]

temperature control setting is precisely what I was referring to by "Set Point".

Typically, it's the temperature you want to achieve, at which point the compressor and/or heater would shut off and wait for the temperature to vary by the differential before turning back on again.

Cheers!

 

[Beltran]

day tripper
How do I get the set temperature higher I'm looking for the temp range to be around 43-45F. When I click on the SET button I only get 0 or 1. I got the compressor to turn off and on like normal, my temperature inside is 34F. I calibrated the sensor before connection the compressor.

I used a digital temperature to verify, I'm off by one degree, on the front panel that's fine.

 

[day_trippr]

To change the temperature you just press Set once/briefly, then use the two arrow keys to adjust the setting, then press Set to exit...

Cheers!

 

[Beltran]

Is there a way for me to reset to factory defaults?

 

[day_trippr]

I've not found a documented way to reset a WH7016C to factory settings...

 

[Beltran]

day tripper here a short video . when I push the set button all I can do is 0-1 I'm not able to change the temp, I even moved the jumpers in the back still not working.

wont let me load the video so I added pictures

 

[day_trippr]

SWAG: that unit is broken...

 

[Beltran]

Well I guess time to put the old stuff back in and get a Johnson Temperature Controller (Digital Thermostat) .