Hello
The ESP probe (Exhaust Sensory Probe on a Harman Wood pellet Stove) relays the exhaust temp back to the control panel. A clean ESP probe can do that much more accurately. Just remove the bolt, pull out the probe and wipe with alcohol and clean any rust or corrosion with emory cloth.
The Harman DVD states to raise the room probe end to 5 feet above the floor to correctly read the room temperature. I changed mine and it really does make the temp dial much more accurate!
See pics below:
The old standard is the black probe, the new red probe is low voltage.
Dip switch 5 on the circuit board is down for black and up for red.
The ESP probe (Exhaust Sensory Probe on a Harman Wood pellet Stove) relays the exhaust temp back to the control panel. A clean ESP probe can do that much more accurately. Just remove the bolt, pull out the probe and wipe with alcohol and clean any rust or corrosion with emory cloth.
The Harman DVD states to raise the room probe end to 5 feet above the floor to correctly read the room temperature. I changed mine and it really does make the temp dial much more accurate!
See pics below:
The old standard is the black probe, the new red probe is low voltage.
Dip switch 5 on the circuit board is down for black and up for red.