73
Alarm Codes - NON-APPLICABLE FAULT CODES
21
REFRIGERANT LOW PRESSURE SWITCH OPEN – CIRCUIT 2
Problem
30
REFRIGERANT HIGH PRESSURE SWITCH OPEN – CIRCUIT 2
Problem
34
Comfort Alert Code 4 for Compressor Circuit 2
Shutdown
35
Comfort Alert Code 5 for Compressor Circuit 2
Shutdown
36
Comfort Alert Code 6 for Compressor Circuit 2
Shutdown
37
Comfort Alert Code 7 for Compressor Circuit 2
Shutdown
38
Comfort Alert Code 8 for Compressor Circuit 2
Shutdown
39
Comfort Alert Code 9 for Compressor Circuit 2
Shutdown
50
FREEZE SWITCH OPEN – CIRCUIT 2
Problem
N.2.3. Non-applicable Fault Codes
The controls used in this product are common
with a few other product families. Because
of this, there are several fault codes that are
programmed into the controls but DO NOT
APPLY to this product. If one of these fault
codes appear, clear the fault and continue
diagnostics. If the code persists, power down
the unit and reapply power before continuing
diagnostics.
These non-applicable fault codes are listed
below:
N.3. Common Mistakes
• These are a list of common mistakes made
during installation.
• Drain Pan Connections, drain trap connected
to the wrong outlet side, not connected at all, or
insufficient trap depth.
• Connecting a W2 call only to try and get full
heat all the time, Connect both W1 and W2
together if the job requirement or thermostat is
setup for single stage heating.
• Connecting a Y2 call only to try and get full
cooling all the time, Connect both Y1 and Y2
together if the job requirement or thermostat is
setup for single stage cooling.
• Economizer connections, not installing the
3-wire jumper plug into the economizer wiring
harness, if a factory option smoke detector is
not used, this will cause a Smoke Detection
Fault.
Fault Codes with Descriptions and Solutions:
460V NEGATIVE PRESSURE CONTROL FAULTS
55 & 44
NEGATIVE PRESSURE CONTROL (NPC) CLOSED
460V furnace uses a single-speed inducer and one pressure switch for low and high-
fire operation. The NPC should be open when the inducer is not operating.
DESCRIPTION:
Before any heat cycle can begin, the NPC is tested to confirm the
contacts are open. An ignition sequence will not occur if the NPC remains closed.
Core Command will flash a “55” & “44” fault code (230V & 460V units use same Core
Command, “44” is normal under this scenario).
See
CAUSE
and
SOLUTION
for fault code “55” above.
57 & 46
NEGATIVE PRESSURE CONTROL (NPC) OPEN
DESCRIPTION:
The inducer will run for 20 seconds in an attempt to close the
pressure switch. At that time the Core Command will flash a “57” & “46” fault
code (230V & 460V units use same Core Command, “46” is normal under this
scenario). Inducer will continue to run an additional 40 seconds before being
de-energized. After a five minute period the Core Command will make another
attempt to close the pressure switch. This cycle will repeat until the pressure
switch closes or call for heat is removed.
See
CAUSE
and
SOLUTION
for fault code “57” above.
Summary of Contents for Climate Master RGED Series
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