10
4 Operation
Instructions for use turboMAX plus, thermoCOMPACT
Troubleshooting
In the unlikely event that a problem occurs with the ope-
ration of the turboMAX plus or thermoCOMPACT boiler,
the following points should be checked:
1. Boiler fails to operate:
• Is the gas supply turned on? (see page 5)
• Is the water supply turned on? (see page 5)
• Is there enough water in the heating system? (see
page 5)
• Is the electrical supply switched on?
• Is the main ON/OFF control in the „On” position?
(switch position „I“) (see page 5)
• Is the burner lock out indicator light illuminated? (see
page 6)
2. Hot water operates but no central heating
(turboMAX plus only)
• Is the heating turned on? (see page 7/8).
• Are all external heating controls ON? (see page 8)
If your boiler still does not operate then please consult
your installer or Vaillant Service Solutions
0870 6060 777.
Status display
(For maintenance and service work performed by your
installer or service agent)
The status displays are activated by pressing the
„i“ button (1). The current status code, e.g. „S.34“ for the
frost protection mode, is shown on the display (2).
Pressing the „i“ button again will switch you back to the
normal mode. The „+“ and „-“ buttons will only be used
by your installer or service agent during service and
maintenance work.
Display
Meaning
S.00*
No heating required
S.01*
Fan running
S.03*
Ignition sequence
S.04*
Burner ignited
S.05*
Fan and water pump over run
S.07*
Water pump over run
S.08*
Anti cycling mode (after heating operation)
S.10**
Hot water demand
S.14**
Burner ignited
S.34*
Frost protection mode
Table B.1: Status display (A complete overview of the status
codes can be found in the installation instructions).
*
Heating operation
**
Hot water operation (turboMAX plus only)
Fig. B.16: Status display
2
1
VRC-VC
C
o
0
I
C
o
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