Fault codeF0070
The communications board did not receive a setpoint during the telegram off time. The manual's first action is: “1. Check connections to the communications board 2. Check the master”
- Model
- Siemens MICROMASTER 420
- Display shows
- Communications board setpoint error (F0070)
- Type
- Fault code
- Source
- Manual p. 71
What F0070 means
Communications board setpoint error p. 71
Common causes
- No setpoint received from communications board during telegram off time p. 71
Safety warnings — read before you start
- DANGERDANGER. indicates an immiently hazardous situation which, if not avoided, will result in death or serious injury. p. 6
- WARNINGWARNING. indicates a potentially hazardous situation which, if not avoided, could result indeath or serious injury. p. 6
- CAUTIONCAUTION. used with the safety alert symbol indicates a potentially hazardous situationwhich, i f not avoided, may result in minor or moderate injury. p. 6
What to do
- 1. Check connections to the communications board 2. Check the master p. 71
If F0070 is still not resolved
- Contact your service dealer for assistance. p. 71 “1. Check connections to the communications board 2. Check the master”
This page summarises what the manufacturer’s manual says about F0070; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.