Air-to-water Heat Pump
67
MONOBLOC
TYPE
(5) Over-temperature Protection of Radiating Fin
No
No
No
No
Yes
Yes
Yes
Yes
E5 is displayed
on the wired
controller.
Nixie tube of
the mainboard
P8 is displayed.
Over-temperature
protection
Is the heat
dissipation of the
outdoorunit is
good condition?
Is the module
tightened?
Does silica gel
of the module meet
the requirement?
Check if the temperature
sensor and voltage divider
resistance both are normal.
If the silica gel is too
thick. It will affect
heat dissipation or even
burn out the module.
If the module is loose, its
temperature would be too high
which might burn out the
module.
If it is too dirty or
blocked, the heat dissipation
effect would be worsen.
If the air outlet and retuan air
passages of the outdoor unit is
blocked, the heat dissipation
effect would be worsen.
It is recorded and
reflected.
Are radiating
fins too dirty or
blocked?
Monitoring
display
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