Status 1 - Rheem RGFG Installation Instructions Manual

FIGURE 46a
MENU TREE
The thermostat menus give active infor-
mation for various parameters and per-
mit some installation options to be
selected.
Note: Supply Air (SA) and Return Air
(RA) temperature readings may not be
accurate in standby mode. These
should only be read and used when the
blower is running in heat, cool or other
modes.
"STATUS 1" menu – This menu gives
information about the status of certain
furnace components and features.
1. MAIN LIMIT – Indicates the state of
the main limit – either opened or
closed. The normal state is closed.
An open limit can be an indicator of
excessive static pressure in the
ventilation duct.
2. MRLC INPUT – Indicates the state
of the Manual Reset Limit Control
(MRLC) – either opened or closed.
The normal state is closed. These
switches are sometimes referred to
as "Roll-Out" controls or limits.
When one or more of these limits
has opened, a flame has rolled into
ST-A1167-01-01
the vestibule. This event should
rarely (if ever) happen but can
be an indicator that the exhaust
flue is blocked.
3. HALC INPUT – Indicates the
state of the Heat Assisted Limit
Control (HALC) – either opened
or closed. The normal state is
closed. This limit switch is only
present on downflow/horizontal
models and can often be an
indicator that the main blower
has stopped turning unexpect-
edly when opened.
61