Vaillant VRC 700/4 Operating Instructions Manual
Also see for VRC 700/4: Schematics and Installation Guide
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Appendix0020200782_03 Operating instructions 23Setting level Values Unit Increment, select Default settingMin. Max.Ventilation boost Active, Not active Not activeParty function Active, Not active Not activeBasic settings → Enter zone name →ZONE1 1 10 Let-ter/numberA to Z, 0 to 9, space ZONE1Basic settings → Ventilation →Heat recovery Auto, Activate, off AutoBasic settings → Max. room air humidity →Max. room air hum. 30 70 %rel 1 40Basic settings → Default setting →Time programmes Yes, No NoEverything Yes, No NoInstaller level →Enter code 000 999 1 000B Detecting and rectifying faultsFault Cause RemedyDisplay is dark Appliance fault – Switch off the mains switch on all heat generators for ap-prox. 1 minute and then switch them on again.– If the fault is still present, inform the competent person.No changes in the display when the rotaryknob is turnedNo changes in the display when the selec-tion buttons are pressedIt is not possible to change the settings orvaluesDisplay view: Button lock active To un-lock, press OK for 3 secondsButton lock is active If you want to change the values without deactivating the but-ton lock:1. Press the OK selection button for 3 seconds.2. Select the function for which you want to change a value.3. Change the value.After one minute of not pressing anything, the button lock isreactivated.If you want to deactivate the button lock:1. Press the OK selection button for 3 seconds.2. Select the Button lock function.3. Change the value to off.Insufficient heating-up of the heating andthe hot waterDisplay view: Restricted operation/ com-fort protectionHeat pump does notwork1. Inform the competent person.Temporary settings until the competent person arrives:2. Use the rotary knob to select the setting:– Inactive: The controller works in limp home mode; heatingand hot water at a moderately warm temperature– Heating*: The auxiliary heater takes over heating mode– DHW: The auxiliary heater takes over domestic hot watermode– DHW+heat.: The auxiliary heater takes over heating anddomestic hot water mode*The auxiliary heater is not as efficient as the heat pump, meaning that using only the auxiliary heater to generate heat is expensive. |
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