Turned my totally cleaned Harman P61A for first time this season. Auger motor not feeding pellets. Combustion blower not on. Room temp and stove temp - same result, Test mode - same result. Read somewhere that the vacuum (pressure) switch could be the culprit, so I bypassed the switch and everything started up like normal. Replaced the switch with a new spare and turned stove on - same problem again. Any ideas out there greatly appreciated.