System fault and lockout LED (DS11 / DS14) alarm codes takes precedence over system status LED codes (cooling, heating stages or defrost/dehumidification).Only the latest active LED fault or lockout alarm code if present will be displayed. If no fault or lockout codes are active, then system status LEDs are routinely displayed. See notes 1 and 2 in table below for duration of fast / slow flashes and pause.
Heat Pump Control | icomfort |
|
|
|
| ||
LEDs | Touch® | Condition | Possible Cause(s) |
| Solution | ||
|
| Thermostat |
| ||||
DS11 | DS14 Red |
|
|
|
| ||
Display |
|
|
|
| |||
Green |
|
|
|
| |||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
| 1 fast flash | Not | Single stage |
|
|
| |
Off | compressor |
|
|
| |||
then pause | applicable |
|
|
| |||
| heating |
|
|
| |||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
| 2 fast | Not |
|
|
|
| |
On | flashes | Defrost |
|
|
| ||
applicable |
|
|
| ||||
| then pause |
| These are codes that show status of operation whether the system is operating in either | ||||
|
|
| |||||
|
|
|
| in first or second stage heating or cooling operation, defrost or in the dehumidification | |||
|
|
| Single−stage | ||||
1 fast flash |
| Not | modes. |
|
| ||
Off | compressor |
|
|
| |||
then pause | applicable |
|
|
| |||
| cooling |
|
|
| |||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
2 fast |
| Not | Dehumidification |
|
|
| |
flashes | On |
|
|
| |||
applicable | mode |
|
|
| |||
then pause |
|
|
|
| |||
|
|
|
|
|
| ||
|
|
|
|
|
|
| |
|
|
|
| ALERT STATUS |
|
| |
|
|
|
|
|
| ||
|
| Moderate | Device | icomfort Touch® thermostat is unable to communicate with any other device on the | |||
|
| RSBus. Alarm only occurs if a specific device did communicate initially after power | |||||
None | Alert Code | communication | |||||
up and communication was later lost. Possible causes are lost connection, bus | |||||||
|
| 105 | failure | ||||
|
| short or open, or other device stop responding. | |||||
|
|
|
| ||||
|
|
|
|
|
| ||
|
|
|
| Message could be sent by any device on RSBus if expected response message is | |||
|
| Moderate |
| not received from other device. If sent by indoor or heat pump control, device did | |||
|
| Unresponsive | not get expected response (incorrect or no response at all) from active Subnet | ||||
None | Alert Code | ||||||
device | controller. If sent by the icomfort Touch® thermostat, and did not get the expected | ||||||
|
| 120 | |||||
|
|
| response (incorrect or no response at all) from device. Normally this indicate device | ||||
|
|
|
| ||||
|
|
|
| malfunction. |
|
| |
|
|
|
|
|
| ||
|
|
|
| Device lost connection to icomfort Touch® thermostat. Thermostat is sending | |||
|
| Critical Alert | Active subnet | heartbeat message in one minute intervals. Device sets this alarm if no Heartbeat is | |||
None | received for three minutes. Normally this indicate lost connection to thermostat, or | ||||||
Code 124 | controller missing | ||||||
|
| thermostat is not working. Alert will clear after valid subnet controller message is | |||||
|
|
|
| ||||
|
|
|
| received. |
|
| |
|
|
|
|
|
| ||
None | Critical Alert | Hardware Failure | Entire or partial system failure. Alert will clear 300 seconds after fault has | ||||
Code 125 | recovered. |
|
| ||||
|
|
|
|
| |||
|
|
|
|
|
|
| |
|
| Moderate / | Internal control | Internal communication on heat pump control. Alert will clear 300 seconds after fault | |||
None | Critical Alert | communication | |||||
has recovered. |
|
| |||||
|
| Code 126 | failure |
|
| ||
|
|
|
|
| |||
|
|
|
|
|
|
| |
None | Critical Alert | Corrupted control | System stored configuration data is corrupted. System will not run. | ||||
Code 131 | parameters | ||||||
|
|
|
|
| |||
|
|
|
|
|
| ||
None | Critical Alert | Failed flash CRC | No operations, heat pump control enters boot loader mode. Alarm will clears after | ||||
Code 132 | check. | reset. Refer to communicating thermostat for memory corrupt handling. | |||||
|
| ||||||
|
|
|
|
|
|
| |
|
| Moderate | Low pressure |
| 1 | Remove any blockages or restrictions from coils | |
Off | Slow flash | Alert Code | 1 Restricted air flow over in- | ||||
fault |
| and/or fans. Check indoor and outdoor fan motor | |||||
|
| 410 | door or outdoor coil. |
| |||
|
|
|
| ||||
|
|
|
| for proper current draws. | |||
|
|
|
|
| |||
|
|
|
| 2 Improper refrigerant |
| ||
|
| Critical Alert | Low pressure | 2 | Check system charge using approach and sub- | ||
Off | On | charge in system. | |||||
Code 411 | switch lockout |
| cooling temperatures. | ||||
|
| 3 Improper metering device |
| ||||
|
|
|
| 3 | Check system operating pressures and compare | ||
|
| Moderate |
| installed or incorrect op- | |||
|
| High pressure |
| to unit charging charts. | |||
|
| eration of metering device. |
| ||||
Slow flash | Off | Alert Code | 4 |
| |||
fault | Make sure all pressure switches and sensors have | ||||||
4 Incorrect or improper sen- | |||||||
|
| 412 | |||||
|
|
|
| secure connections to system to prevent refriger- | |||
|
|
|
| sor location or connection |
| ||
|
|
|
|
| ant leaks or errors in pressure and temperature | ||
|
|
|
|
| |||
|
| Critical Alert | High pressure | to system. |
| ||
On | Off |
| measurements. | ||||
Code 413 | switch lockout |
|
| ||||
|
|
|
|
| |||
|
|
|
|
|
|
| |
Page 41
XP17 SERIES
