amx,
Your XPTT and XPTR have told you that you are successfully sending a signal to the appliance module with adequate level and no errors. Unfortunately they can't tell you if it was the correct command.
Please have a look at your activity monitor when you are activating the unit via AHP and your remote. It's possible that you have a macro that has crept in at the same address as your Appliance module. When this happens, will intercept the RF command as shown below.
I set the following test file up for a lamp module. The lamp works fine when I activate through AHP. When I use a RF transmitter to turn "L1 ON", the macro intercepts and turns on L2. Note that since I don't have a "L1 Off" macro, the RF command for L1 Off works fine.
This is a very easy mistake to make. If you accidentally create a macro (at the same address as a module) in any "room" within AHP, it will intercept RF commands (yes, I've done this myself). There have also been claims that deleted macros in the deleted modules "basket" can still activate (I haven't seen this).
Boiler