Bosch SM024 - Page 55

Troubleshooting | 55SM Series Heat Pump
6 720 220 406 (2015/02)Revised 02-15
Smart Start Assist Flashing sequence
SMART START ASSIST LED STATUS INDICATION
Red Led Relay
Contact*
Condition Action
FULLY ON + 11/12 Min. recovery time between
starts and /or recovery time
between stop to start
Auto reset when minimun recovery
time elapses
2 FLASHES 11/14 Undervoltage (Ue<190VAC) Auto reset with 5 mins recovery **
3 FLASHES 11/14 Overcurrent (>80A for >1
sec.)
Auto reset with 5 mins recovery
4 FLASHES 11/14 relay protection Auto reset with 5 mins recovery***
5 FLASHES 11/14 incomplete ramp Auto reset with 5 mins recovery
N/A 11/12 Supply phase loss Physical check
N/A 11/12 Idle state
N/A 11/12 Ramping state
N/A 11/12 Bypass mode
Green Led Relay
Contact*
Condition Action
FLASHING 11/12 Power supply alarm Replace Smart Start device
FULLY ON 11/12 Idle State RSBS waiting for control signal to
start
+ APPLICABLE TO RSBS2332A2V.2C24HP. FOR MODELS,NO INDICATION ON THE RED LED IS PROVIDED
*APPLIES ONLY TO RSB23XXA2V22C24..MODELS
**MONITORED DURING IDLE AND BYPASS
***REFER TO NOTE 6 IN MODE OF OPERATION SECTION
****REFER TO VOLTAGE DIPS AND INTERRUPTIONS SECTION FOR MODE OF OPERATION
NOTE: During recovery from an alarm condition, the red LED will flash at twice the normal flashing frequency
between successive flashing cycles as shown above to indicate that the Smart start Assist is in recovery mode
which recovery lasts for 5 minutes.