Supply fan switeches off during
temperatures below +1˚C.
Extract fan works normally
Defrost procedure is active.
Normal operation mode which protects
heat exchanger before freezing. To avoid
this install preheater HRQ-PremAIR-
HDE-160-1,5.
Bad smell in supply air
Intake valve is too close to exhaust valve.
Change position of intake or exhaust
valve.
Summer siphon dry.
Fill summer siphon.
Water drains from unit
Wrong duct connection
Check duct connection according to
chapter 4.4
Condesate drain elastic pipe wrong
connection
Check siphon connection according to
chapter 4.2
Wrong unit leveling
Check unit leveling accroding to chapter
4.2
Water "grougle" in unit
Siphon is not connected
Connect siphon accodring to chapter 4.2
Siphon is dry
Fill water to siphon accroding to chapter
4.2
Passive cooling is not enough
Passive cooling does not mean air
conditioning (active cooling). To increase
passive cooling change speed fans speed
to higher speed.
59
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User Manual
HRU-MinistAIR