Hello, We had a new boiler system installed last year, including a new programmer and wireless thermostat. These are a Honeywell wireless enabled programmer (ST9420C) & Wireless room thermostat (DT92E) as far as I know (The stat is correct, I think that's the correct programmer). The stat intermittently (but regularly) looses its RF connection to the relay box and requires resetting. In the last year, its dropped 15 times (including 3x yesterday alone - doesn't seem like much, but obviously heating wasn't required for most of this year!) The programmer is installed next to our pressured hot water cylinder in the airing cupboard upstairs along with the relay box for the wireless stat. The relay box for the thermostat is positioned at least 30cm away from anything metal; so shouldn't be experiencing any interference. The stat is downstairs in the hallway, probably about 5-6m away total, so has to transmit through 1-2 walls/1 ceiling. According to HW specs, it should connect through 3-4 walls and 30m range. However despite trying to move the stat in all different rooms of the house, unable to get a "strong" signal apart from literally right outside the door of the airing cupboard. Based on the evidence, does this seem like a faulty stat?