Heater worked last year (AFAIK).
It just started getting cold in California, so, the heater power was turned on, and ... and ... and ... uh ... um ... no heat. https://c4.staticflickr.com/8/7508/15874015487_954311f464_k.jpg
Thermostat batteries are good: https://c1.staticflickr.com/9/8595/15872500000_fd3c98abbd_k.jpg
Heater power is on and the blower blows but the red led blinks at a steady pace forever. https://c4.staticflickr.com/8/7513/16057827501_184a54e186_c.jpg
Checked that the switches inside were all on: https://c4.staticflickr.com/8/7510/15437487484_e1c399d625_b.jpg
Checked that the fuse on the circuit board was good: https://c1.staticflickr.com/9/8672/16059787345_1a4a6d21f8_c.jpg
The sticker says constant flashes indicates reverse wiring: https://c4.staticflickr.com/8/7505/15872330868_8d4f42e6c5_c.jpg
But, there's no way the wiring was changed between last year & now. https://c4.staticflickr.com/8/7540/15437487004_282d8775fe_c.jpg
Here's what it looks like inside: https://c4.staticflickr.com/8/7561/16059787745_b47f78bee3_b.jpg
I don't know where the model number is, so, I don't have a manual yet.
Debugging suggestions are requested, and very helpful. Thanks!