Control Board Replacement; High And Low Pressure Controls - Rheem A17 Series Installation Instructions Manual

7.0 COMPONENTS & CONTROLS
7.5 EcoNet
30 Second Minimum Run Time
• The control has a built in minimum unit run time. If
a command for compressor operation is received
and the command is removed within 30 seconds,
the compressor will continue to operate until the 30
second minimum run time has been satisfied. The
7-segment LED will flash "c" or "C" while the mini-
mum run time is active.
1 Second Compressor/Fan Delay
• The control starts/stops the outdoor fan motor one
(1) second after the start/stop of the compressor
upon a command for compressor operation to mini-
mize current inrush and/or voltage drop.

7.6 High and Low Pressure Controls

HPC and LPC are factory installed on
(-)A17**AJ2CB. These controls keep the compressor
from operating in pressure ranges which can cause
damage to the compressor. Both controls are in the
low-voltage control circuit.
The high-pressure control (HPC) is an automatic re-
set type which opens near 610 PSIG [4206 kPa] and
closes near 420 PSIG [2896 kPa].
32
2-Stage Outdoor Control (TSODC) (cont.)
TM
7.5.3 Control Board
Replacement
Each control board in the EcoNet™ Communication
Network needs information specific to the unit the con-
trol is installed in. This information is called model data
because it is model specific information required for the
communication network to operate properly for the spe-
cific model installed. The data for a unit contains infor-
mation that allows the unit to operate correctly. When a
control board requires replacement, it is important that
the replacement board gets the model data from the old
control. The primary way the replacement control gets
this information is by the memory card that should be
installed on the old control. Remove the memory card
from the old control, replace the control, and reinstall
the memory card on the new control. The memory card
from a different unit should never be used.
NOTE: See links to training and service
manuals at MyRheem.com or MyRuud.com, or
contact the wholesale distributor selling this unit.
The low-pressure control (LPC) is an automatic reset
which opens near 50 PSIG [345 kPa] and closes near
95 PSIG [655 kPa].
CAUTION:
an internal overload protector. Under some
conditions, it can take up to 2 hours for this overload
to reset. Make sure overload has had time to reset
before condemning the compressor.
The compressor has