York IDM030B21E Series, Service Manual, Page: 39 / 144

SM-16005-rev.2
3-17
TROUBLESHOOTING
3.2.1 Alarm Code Table
Code Category Content of Abnormality Leading Cause
01 Indoor Unit
Activation of Protection Device
(Float Switch)
Activation of Float Switch (High Water Level in
Condensate Pan, Problem with Condensate Piping,
Float Switch, or Condensate Pan)
03 Communication Operational Irregularities between
Indoor and Outdoor
Incorrect Wiring, Loose Terminals, Disconnect Wire,
Blowout of Fuse, Outdoor Unit Power OFF
11
Sensor on
Indoor Unit
Inlet Air Thermistor
Incorrect Wiring, Disconnecting Wiring
Breaking Wire, Short Circuit
12 Outlet Air Thermistor
13 Freeze Protection Thermistor
14 Gas Piping Thermistor
15 Outdoor Air Thermistor (ECONO)
19 Fan Motor
Activation of Protection Device for
Indoor Fan
Fan Motor Overheat, Lockup
31
System
Incorrect Capacity Setting of
Outdoor Unit and Indoor Unit
Incorrect Capacity Code Setting of Combination
Excessive or Insufficient Indoor Unit Total
Capacity Code
35 Incorrect Setting of Indoor Unit No. Duplication of Indoor Unit No. in same Refrigerant
Group
b0
Incorrect Setting of Unit Model
Code
Unit model code setting is not set or is set for the
incorrect indoor unit type.
b1
Incorrect Setting of Unit and
Refrigerant Cycle Number
There are 64 or More Number is Set for Address or
Refrigerant Cycle.