Troubleshooting - Myson 6-4 User Manual

10 LO-LINE RC & LO-LINE RC Heater/Cooler
11.0 Operating Instructions
Operation
Power off
Switch on supply to unit
(unit off)
Switch on unit
Use '+/-' to adjust
set point
The ambient temperature is always displayed unless the water
temperature falls below 32°C*, or if the set point is being
adjusted.
Water temp <32°C
*32°C in heating and above 20°C in cooling.

12.0 Troubleshooting

Once installed this fan convector becomes part of a complete
heating system that will generally include a 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
installer or MYSON Service. Before calling your installer or
MYSON Service, please carry out the checks listed opposite.
(continued...)
Display
No Display
for 30 seconds
Supply on / unit off
Set point flashes for
approx 5 secs, then
Ambient temperature
displayed
Set point flashes for
approx 5 secs, then
Ambient temperature
Shows both power
& unit on
Manual
Manual mode can be used for air circulation without heat or for
manual control of the heating function.
Use '+' to scroll beyond 35°C
Or use '-' to scroll below 15°C
Selected fan speed displayed
Scrolling back out of manual using the '+' or '–' button will revert
the unit back to last temperature set point.
Cooling Mode
l Close the heating system and isolate any other heat emitters.
l Open the cooling water system.
l Ensure cooling is on, and set cooling unit timer and controls
as necessary.
Cooling operation works in exactly the same way as heating.
Follow the procedure above to set the unit controls.
Locking Unit Controls
The control panel on the main unit can be locked electronically
to prevent interference once the controls have been set. After
setting the unit to the desired temperature setting and with the
unit in running mode, press the On/Off button on the main unit
for about 6 seconds until the two middle horizontal bars appear
on the display. The horizontal bars will disappear after about 6
seconds and the unit is in key lock mode.
If any of the unit controls are pressed the horizontal bars will
reappear to show the key lock mode is activated, however,
during this mode the handset controls remain functional.
To unlock the system press the On/Off button for about 6
seconds until the horizontal bars disappear.
Note: If you call out MYSON Service to a fault detailed opposite,
or to repair a fault caused by incorrect use, a call out charge will
be made.
Continuous
fan only
Fan & water
temperture
(water inlet >32°C)