Carrier Weathermaster 48P2030-100 - Page 120

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T170 Compressor Expansion Board Comm Failure Compressors A3 and B3 disabled Automatic
A171 Staged Gas Control Board Comm Failure Staged gas control disabled Automatic
T172 Control Expansion Module Comm Failure All CEM board functions disabled Automatic
A173 RXB board Communication Failure Unit shut down Automatic
A174 EXB board Communication Failure All EXB board functions disabled Automatic
A175 Supply Fan VFD Communication Failure Unit shut down Automatic
T176 Exhaust Fan VFD Communication Failure No building pressure control Automatic
T177 4-20 mA Demand Limit Failure No demand limiting Automatic
T178 4-20 mA Static Pressure Reset Fail No static pressure reset Automatic
A200 Linkage Timeout Error - Comm Failure Resorts to local unit setpoints Automatic
T210 Building Pressure Transducer Failure No building pressure control function Automatic
T211 Static Pressure Transducer Failure No static pressure control Automatic
T220 Indoor Air Quality Sensor Failure No IAQ control Automatic
T221 Outdoor Air Quality Sensor Failure OAQ defaults to 400 ppm Automatic
T229 Economizer Min Pos Override Input Failure Operate without override Automatic
T245 Outside Air Cfm Sensor Failure No OA CFM control Automatic
T246 Supply Air Cfm Sensor Failure Unit shut down Automatic
T247 Return Air Cfm Sensor Failure Unit shut down Automatic
T300 Space Temperature Below Limit Alert only Automatic
T301 Space Temperature Above Limit Alert only Automatic
T302 Supply Temperature Below Limit Alert only Automatic
T303 Supply Temperature Above Limit Alert only Automatic
T304 Return Temperature Below Limit Alert only Automatic
T305 Return Temperature Above Limit Alert only Automatic
T308 Return Air Relative Humidity Below Limit Alert only Automatic
T309 Return Air Relative Humidity Above Limit Alert only Automatic
T310 Supply Duct Static Pressure Below Limit Alert only Automatic
T311 Supply Duct Static Pressure Above Limit Alert only Automatic
T312 Building Static Pressure Below Limit Alert only Automatic
T313 Building Static Pressure Above Limit Alert only Automatic
T314 IAQ Above Limit Alert only Automatic
T316 OAT Below Limit Alert only Automatic
T317 OAT Above Limit Alert only Automatic
T335 Excess Outdoor Air Alert only Automatic
A400 Hydronic Freeze Stat Trip Unit in emergency mode Automatic
A404 Fire Shut Down Emergency Mode (fire-smoke) Unit shut down Automatic
A405 Evacuation Emergency Mode Run evacuation mode Automatic
A406 Pressurization Emergency Mode Run pressurization mode Automatic
A407 Smoke Purge Emergency Mode Run smoke purge mode Automatic
T408 Dirty Air Filter Alert only Automatic
T409 Supply Fan Status Failure Alert only Manual
A409 Supply Fan Status Failure Unit shut down Manual
A410 Supply Fan VFD Fault Unit shut down Manual
A411 Exhuast Fan VFD Fault Unit shut down Manual
T414 Damper Not Modulating Alert only Automatic
T421 Thermostat Y2 Input On without Y1 On Run on Y2 Automatic
T422 Thermostat W2 Input On without W1 On Run on W2 Automatic
T423 Thermostat Y and W Inputs On No cooling or heating Automatic
T424 Thermostat G Input Off On a Cooling Call Turn fan on and cool Automatic
T430 Plenum Pressure Safety Switch Trip Alert only Automatic
A430 Plenum Pressure Safety Switch Trip Unit shut down Manual
T431 Motor Starter Protector Trip Alert only Automatic
A432 Motor Starter Protector Lockout No building pressure control Automatic
T500 Current Sensor Board Failure - A1 Alert only Automatic
T501 Current Sensor Board Failure - A2 Alert only Automatic
T502 Current Sensor Board Failure - B1 Alert only Automatic
T503 Current Sensor Board Failure - B2 Alert only Automatic
T504 Current Sensor Board Failure - A3 Alert only Automatic
T505 Current Sensor Board Failure - B3 Alert only Automatic
T610 Economizer Actuator Out of Calibration Alert only Automatic
T611 Economizer Actuator Comm Failure No economizer functions Automatic
T612 Economizer Actuator Control Range Increased Alert only Automatic
T613 Econ Actuator Overload, Setpt Not Reached Alert only Automatic
T614 Econ Actuator Hunting Excessively Alert only Automatic
T615 Econ 1 (Outside) Not Economizing When It Should Alert only Automatic
T616 Econ 1 (Outside) Economizing When It Should Not Alert only Automatic
T617 Econ 1 (Outside) Damper Stuck Or Jammed Alert only Automatic
Table 104 — Alert and Alarm Codes (cont)
ALARM OR
ALERT
NUMBER
DESCRIPTION ACTION TAKEN BY CONTROL RESET METHOD