RT-SVX075C-EN
55
Display Code Code Type Description Additional Comments and Notes
AA0033 Alert Insufficient Combustion Air Blocked vent with actuator position derated by >20%
from FRI setting
AA0044 Alert Limited Low Fire (due to Lost Flame Auto-Adaptation) Flame loss at low fire results in an auto-adjustment that
limits the burner turn down during the rest of the current
call for heat.
AA0055 Alert Weak Flame Signal Flame presence signal of less than 1.5µA indicates an
aged flame rod.
AA0077 Alert Loss of Inducer Motor Control Air pressure is not modulating down at minimum inducer
drive.
AA0088 Alert Air Sensor Null Pressure Check out-of-tolerance Air pressure sensor zero reading appears to be out-of-
tolerance.
AA1111 Alert Failed Ignition — split manifold burner Failed Ignition, Split manifold burner, retries exhausted.
AA1155 Alert Weak Flame Signal — split manifold Weak Flame Signal, one or more split-manifold staged
burners.
EE0011 1hr L/O Failed Ignition Four failed ignition attempts have occurred.
EE0022 10s L/O Primary Limit Failure Verify Primary Limit input at connector J8 and fuse at
F1.
EE0033 10s L/O Modulation Valve Failure Valve Actuator did not reach a Park or Full On position.
EE0044 30s L/O Air Sensor Failure — Pressure Reading Low Includes insufficient air lockout due to blocked vent.
Includes air switch failure to open during pre-purge
switch check.
EE0055 30s L/O Air Sensor Failure — Pressure Reading High Includes air switch failure to close during pre-purge
switch check.
EE0088 10s L/O Improper Flame
EE0099 0s L/O No R-W Enable An R-W open circuit is preventing the control from
operating on a non-zero Firing Rate Demand or Firing
Rate Input.
EE1111 10s L/O 1287 Lockout (L/O) 1287 L/O causes a 1285 L/O. Check 1287 control board
LED state per the 1287 LED key below.
EE1133 10s L/O Open fuse
EE1188 10s L/O 1287 Improper Flame Unexpected flame, Split manifold burner.
EEiidd 10s L/O Invalid I.D. Plug Installed
Return Air Smoke Detector
The return air smoke detector is designed to shut off the
unit if smoke is sensed in the return air stream. Sampling
the airflow entering the unit at the return air opening
performs this function.
In order for the smoke detector to properly sense smoke in
the return air stream, the air velocity entering the unit must
be between 500 and 4000 feet per minute. Equipment
covered in this manual will develop an airflow velocity that
falls within these limits over the entire airflow range
specified in the evaporator fan performance tables.
Compressor Start-Up
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury.
When it is necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been properly trained in
handling live electrical components perform these
tasks.
1. Attach a set of service gauges on the suction and
discharge gauge ports for each circuit.
Proceed to the next Service Test step if continuing from
previous component start-up or until the desired start-
up component test is started.
Unit Start-Up
To Next Page
Loading...
Need help?
General
