Heat pumps · Error codes · Vaillant
VRC700-MAINT-2Vaillant · aroTHERM plus (VWL ../6 A)
VRC700-MAINT-2 on a Vaillant aroTHERM plus: The heat generator requires maintenance work (1-7)
Short answer
On a Vaillant heat pump, VRC700-MAINT-2 means: The heat generator requires maintenance work (1-7). The heat pump keeps running. An engineer is needed to fix the cause.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: The heat generator requires maintenance work (1-7).
Part involved: System control maintenance reminder.
Likely causes:
- The heat generator requires maintenance work (1-7).
Is it safe?
| Does the heat pump stop? | No |
|---|---|
| Severity | Information only |
| Engineer needed? | Yes |
The heat pump keeps running.
Resetting itself: cleared by the engineer after maintenance.
Manual reset: engineer resets.
What you can check
- Arrange the annual service with your installer (required to keep the Vaillant guarantee valid).
What the engineer will check
- Carry out the maintenance work described in the heat pump/heat generator instructions, then reset the message.
Who to ask for: Vaillant-trained heat pump installer/engineer (MCS-certified installer).
Certification: MCS installer certification; Vaillant product training recommended.
Sources
- VRC 700 installation instructions ↗ · 0020262579_01 · page VRC 700 installation instructions 0020262579_01 p.36 (Appendix E) · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026