Is my MasterTemp heater communicating?

[dkossman]

Can anyone point out which is the RS485 connector on the current Mastertemp gas heaters? the manual doesn't actually have a picture and its also not clear which is pin 1. The manual talks about 3 wires (black, yellow, green) but my Intelliflo uses 2 (yellow, green) as does my USB RS485 dongle.

see photos (note - these are mirror image, the 3-pin connector is on the top right as i'm facing the front of the heater). Which one is the RS485, and which is pin 1? (according the the manual pin 1 is for the black @(presumably ground, unused) wire.)

thanks. Just trying not to blow things up right out of the gate :-).

[rstrouse]

You should be able to pull the connector off the pins. It should be the terminals marked green and yellow.

it should be the 4 pin and the two middle ones are the data pins. The power pins should not be required.

[dkossman]

Thanks - I’m in the process of getting everything hooked up. 10k thermistor temp probe should go into the return line tomorrow, then I should be ready to try to figure out how to configure everything…

I have a question about pool cover control using REM and the relay board but will post separately. Thanks in advance for all the help!

[rstrouse]

10k thermistor should go between the pump and the filter

[dkossman]

OK - took the cover off the heater and confirmed i had green and yellow correctly wired.
I'm noticing, however, that when i measure the DC voltage across the 2 wires, it is zero. Whereas doing the same for the Intelliflo pump gives me about 3.3 volts.

Is this normal? if not, is there something else i need to do to enable the RS485 port on the heater? I've set the address to 2 to avoid conflict with the pump.

i see this in the log when i turn on packet debugging for the heater:

[6/19/2024, 11:08:35 AM] info: [11:08:35 AM] 10.0.1.36 GET /app/config/log {}
[6/19/2024, 11:08:35 AM] info: [11:08:35 AM] 10.0.1.36 GET /state/appVersion?null {}
[6/19/2024, 11:08:35 AM] info: [11:08:35 AM] 10.0.1.36 GET /config/all?null {}
[6/19/2024, 11:08:35 AM] info: [11:08:35 AM] 10.0.1.36 GET /app/config/options/backup?null {}
[6/19/2024, 11:08:41 AM] info: [11:08:41 AM] 10.0.1.36 PUT /app/logger/setOptions {"packet":{"pump":{"enabled":false}}}
[6/19/2024, 11:08:41 AM] info: [11:08:41 AM] 10.0.1.36 PUT /app/logger/setOptions {"packet":{"pump":{"enabled":false}}}
[6/19/2024, 11:08:46 AM] info: [11:08:46 AM] 10.0.1.36 PUT /app/logger/setOptions {"app":{"level":"debug"}}
[6/19/2024, 11:08:46 AM] verbose: Wrote packet [Port 0 id: 14015] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:08:46 AM] verbose: Wrote packet [Port 0 id: 14017] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:08:47 AM] verbose: Wrote packet [Port 0 id: 14019] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:08:47 AM] verbose: Wrote packet [Port 0 id: 14021] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:08:48 AM] debug: Heater Type: mastertemp Mode: Temp: 83.14 Setpoint: 0 Status: 0
[6/19/2024, 11:08:48 AM] debug: Heater Type: mastertemp Mode: Temp: 83.14 Setpoint: 0 Status: 0
[6/19/2024, 11:08:49 AM] verbose: Wrote packet [Port 0 id: 14023] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:08:49 AM] debug: Heater Type: mastertemp Mode: Temp: 83.14 Setpoint: 0 Status: 0
[6/19/2024, 11:08:49 AM] verbose: Wrote packet [Port 0 id: 14025] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:08:49 AM] verbose: Wrote packet [Port 0 id: 14027] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:08:50 AM] debug: Heater Type: mastertemp Mode: Temp: 83.14 Setpoint: 0 Status: 0
[6/19/2024, 11:08:50 AM] verbose: Wrote packet [Port 0 id: 14029] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:08:51 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:51 AM] verbose: Wrote packet [Port 0 id: 14031] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:08:51 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:51 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:52 AM] verbose: Wrote packet [Port 0 id: 14033] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:08:53 AM] verbose: Wrote packet [Port 0 id: 14035] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:08:53 AM] verbose: Wrote packet [Port 0 id: 14037] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:08:54 AM] verbose: Wrote packet [Port 0 id: 14039] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:08:54 AM] verbose: Wrote packet [Port 0 id: 14041] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:08:54 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:54 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:55 AM] verbose: Wrote packet [Port 0 id: 14043] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:08:55 AM] debug: Heater Type: mastertemp Mode: Temp: 83.2 Setpoint: 0 Status: 0
[6/19/2024, 11:08:56 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:08:56 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:08:56 AM] verbose: Wrote packet [Port 0 id: 14045] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:08:56 AM] verbose: Wrote packet [Port 0 id: 14047] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:08:57 AM] verbose: Wrote packet [Port 0 id: 14049] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:08:57 AM] verbose: Wrote packet [Port 0 id: 14051] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:08:57 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:08:57 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:08:58 AM] verbose: Wrote packet [Port 0 id: 14053] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:08:59 AM] verbose: Wrote packet [Port 0 id: 14055] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:08:59 AM] verbose: Wrote packet [Port 0 id: 14057] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:08:59 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:09:00 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:09:00 AM] debug: Heater Type: mastertemp Mode: Temp: 83.13 Setpoint: 0 Status: 0
[6/19/2024, 11:09:00 AM] verbose: Wrote packet [Port 0 id: 14059] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:09:00 AM] verbose: Wrote packet [Port 0 id: 14061] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:09:01 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:01 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:01 AM] verbose: Wrote packet [Port 0 id: 14063] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:09:02 AM] verbose: Wrote packet [Port 0 id: 14065] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:09:02 AM] verbose: Wrote packet [Port 0 id: 14067] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:09:03 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:03 AM] verbose: Wrote packet [Port 0 id: 14069] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:09:03 AM] verbose: Wrote packet [Port 0 id: 14071] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:09:03 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:04 AM] verbose: Wrote packet [Port 0 id: 14073] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:09:04 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:05 AM] debug: Heater Type: mastertemp Mode: Temp: 83.23 Setpoint: 0 Status: 0
[6/19/2024, 11:09:05 AM] info: [11:09:05 AM] 10.0.1.36 PUT /app/logger/setOptions {"packet":{"heater":{"enabled":false}}}
[6/19/2024, 11:09:05 AM] info: [11:09:05 AM] 10.0.1.36 PUT /app/logger/setOptions {"packet":{"heater":{"enabled":false}}}
[6/19/2024, 11:09:05 AM] verbose: Wrote packet [Port 0 id: 14075] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:09:05 AM] verbose: Wrote packet [Port 0 id: 14077] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:09:06 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:06 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:06 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:06 AM] verbose: Wrote packet [Port 0 id: 14079] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:09:06 AM] verbose: Wrote packet [Port 0 id: 14081] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:09:07 AM] verbose: Wrote packet [Port 0 id: 14083] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:09:08 AM] verbose: Wrote packet [Port 0 id: 14085] [255,0,255,165,0,96,33,6,1,10,1,55].Retries remaining: 1
[6/19/2024, 11:09:09 AM] verbose: Wrote packet [Port 0 id: 14087] [255,0,255,165,0,96,33,1,4,2,196,4,176,2,165].Retries remaining: 1
[6/19/2024, 11:09:09 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:09 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:10 AM] verbose: Wrote packet [Port 0 id: 14089] [255,0,255,165,0,96,33,7,0,1,45].Retries remaining: 2
[6/19/2024, 11:09:10 AM] verbose: Wrote packet [Port 0 id: 14091] [255,0,255,165,0,96,33,4,1,255,2,42].Retries remaining: 1
[6/19/2024, 11:09:10 AM] debug: Heater Type: mastertemp Mode: Temp: 83.28 Setpoint: 0 Status: 0
[6/19/2024, 11:09:10 AM] verbose: Wrote packet [Port 0 id: 14093] [255,0,255,165,0,113,16,112,11,0,0,0,0,0,0,0,0,0,0,0,1,161].Retries remaining: 3
[6/19/2024, 11:09:11 AM] debug: Heater Type: mastertemp Mode: Temp: 83.27 Setpoint: 0 Status: 0
[6/19/2024, 11:09:11 AM] debug: Heater Type: mastertemp Mode: Temp: 83.27 Setpoint: 0 Status: 0
[6/19/2024, 11:09:11 AM] info: [11:09:11 AM] 10.0.1.36 PUT /app/logger/setOptions {"app":{"level":"info"}}

[dkossman]

updated the name of this discussion to reflect my current questions... thanks in advance for any help anyone can provide!

[rstrouse]

You will need to provide a packet capture or inspect the packets using messageManager. I do not see a setpoint applied to the heater though. It will not heat to 0 and in order to engage the heater it will need to know the current temperature of the water. Tap on the setpoint in dashPanel and provide one that is > than 83.27 degrees.

[rstrouse]

Here is a link to messageManager. This will give you a complete dump of all traffic on the bus in real time.

https://github.com/rstrouse/nodejs-poolController-dashPanel/wiki/Message-Manager

[dkossman]

Thanks, in retrospect that should have been obvious! I hadn’t noticed that popup where you adjust the setpoint and select the Mastertemp!

So - the heater is communicating fine on RS485, it kicked in as expected once I adjusted the setpoints.

Appreciate your help and patience!