Troubleshooting - Purmo VIDO 1370071 Manuel D'installation, D'utilisation Et De Service

13.0 Troubleshooting

Please follow the troubleshooting guide below before calling
for assistance. It is important to make sure that an apparent
problem with this unit is not the result of system controls being
Problem
Heating Mode/
Cooling Mode -
No Fan
Poor heating
performance/
unit cycling on
water sensor
If the fan convector is still faulty after checking the above, call your installer or after sales service.
Possible Installation Faults
Poor heating or cooling performance from this unit could be the
result of one or more of the following factors which should have
been taken into consideration at the installation stage.
l Unit incorrectly sized against the room heat loss.
l Lack of water flow - Incorrect pipe size to unit
- Valves not fully open
- System incorrectly balanced
- Pump set too low
l Boiler or heat pump controls set too low.
22
Possible Causes
Electrical supply switched off
Fuse blown
Unit switched off
Temperature set point reached
Water temperature reaching fan
convector below 32°C in heating
or above 15°C in cooling
Low water temperature to unit
Poor water flow
incorrectly set, that there is no electrical supply to the unit or that
the unit is incorrectly set.
Switch unit on at LCD display
increase temperature set point
Check boiler, heat pump or equivalent
Boiler/Heat pump on and set to
Note: Operation of fan convector can be checked by
switching to manual fan setting
Turn up water temperature at boiler
Vent air from heating system
System Diagnostic
A system diagnostic tool has been built into the control system
of this unit which enables testing of all the input and output
functions from the control.
Select AUTO setting in the user menu then press "Down" for
5 seconds.
Use the left and right arrows to scroll through the
inputs/outputs from relays, air sensor, water sensors, BMS inputs,
and screen to check as necessary.
Note: The control will revert back to the main menu after
1 minute if no buttons are pressed.
remedy
Switch on supply
replace fuse
Programmer ON
correct setting
Pump running
or heat pump