Troubleshooting - Radson Optimo 500 Handbuch

06 OPTIMO 500, 600 & 800
®

11.0 Troubleshooting

Once installed this fan convector becomes an integral part of a
complete heating system that includes boiler, pump, other
emitters such as radiators and fan convectors, and a number of
heating controls, dependent on system complexity. An apparent
problem with this unit may be the result of system controls being
incorrectly set and can be solved easily without calling out your
Problem
Central heating
Mode - No Fan
Central Heating Mode
- poor heating
performance and/or
unit cycles on
low limit thermostat
If the fan convector is still faulty after checking the above, call your installer or service.
Common Installation Faults
For optimum performance, this unit must be correctly sized to
match the heat loss requirements of the space it is required to
Problem
Poor heating
performance
Poor heating
performance
(unit may cycle on
low limit thermostat)
Possible Causes
Unit switched off
Room thermostat not calling for heat
Unit not switched on at fused spur
Fuse blown at fused spur
Unit isolating valves shut
Water temperature reaching
fan convector below 32°C
Remote control switched off (if fitted)
Low water temperature to unit
Poor water flow
Unit incorrectly sized for heat loss of room
System incorrectly balanced with unit starved of hot water flow
installer or OPTIMO ® Service. Before calling your installer or
®
OPTIMO Service, please carry out the checks listed below.
Note: If you call out OPTIMO
to repair a fault caused by incorrect use, a call out charge will be
made.
Check boiler - Programmer ON
Boiler ON and set to high with
central heating pump running
Note: Operation of fan can be checked by
Turn up boiler thermostat
Vent air from heating system
heat, and the heating system must be correctly designed to
provide adequate flow of hot water to the unit (see Section 2).
If the recommendations in Section 2 are not followed, problems
may arise as detailed below.
Possible Causes
Boiler thermostat set too low
Lack of flow to fan convector
Pump set on low setting
Isolating valves not fully open
Pipe sizing to unit too small
® Service to a fault detailed below, or
Remedy
Turn on
Turn up room thermostat
Switch on at spur
Replace fuse
Open valves
switching to summer setting
Switch to heating mode