otrfun wrote:
SJ-Chris wrote:
. . . I would guess the Fridge Defend is designed such that you can adjust those temperature settings for detecting high temp . . .
-Chris
The Fridge Defend high-temp cut-off is adjustable (at least on v4 and v5). Instructions how to adjust it can be downloaded at the FD website.
The FD logs the maximum boiler temp and number of times the high-temp cut-off has activated (since the last user reset). The boiler temps on our Dometic DM2663 typically hover between 185-190c/365f-374f (on propane, 120vac, and 12vdc). After a year or so of travel with zero effort to make sure our truck camper was level, the FD logged a max boiler temp of 207c/405f (we reset it). Just to be on the safe side we also reset/lowered the factory default high temp cut-off from 217c/423f to 202c/396f. After another two years of travel, max boiler temp has only risen as high as 197c/387f. Lastly, just to make sure all was well after all these resets, we manually heated the FD boiler sensor above the high-temp cut-off. The FD cut-off 12vdc power to the fridge control board and logged it.
Thank you for providing your data! Very interesting to read.
FD default is set to 217*C...good to know. On their video it looks like making sure the boiler doesn't get over ~220-225*C is important.
Your max of 207*C over a 3 year period is good to know. It is also pretty reassuring in general for all those absorption refrigerators out there (especially since you didn't do anything extra to try to keep things level).
I will likely set my high temp thermostat to 210*C (410*F) to turn off.
-Chris
