Gravelight Hearth Watch Repair Kit Service Issue

Gravelight Hearth Watch Repair Kit Service Issue earns its locker space by giving numbers a crew can defend later. Its diagnostic repair kit isolates life-support heat and humidity balance before a watch tech starts swapping innocent parts, comparing dew-point, thermal, and gas-channel response. Clip a duct probe in moving air to the suspect assembly and run the stepped stimulus; each removed lead is logged as a break in evidence. Results travel with raw waveforms, probe serial, calibration age, and uncertainty bands, so a later investigator can see the sausage being made. Calibration uses a humidity-and-oxygen standard; mismatched serials remain attached to the result instead of being waved away. The service issue boots fast and sacrifices some precision for an answer before the alarm changes pitch. Re-zero the meter leads, clean the probe sockets, and inventory the sacrificial tips after every repair watch. A backfed circuit can mimic life-support heat and humidity balance; the kit flags reverse current and refuses to collapse contradictory traces into one friendly green lamp.