HRX-OM-Q026 
Chapter  7   Control,  Inspection  and  Cleaning 
HRSH Series  7.2 Inspection and Cleaning 
 
7-3   
◼ Periodical inspection during the summer season 
If heat from the product cannot be sufficiently radiated due to a rise in the ambient 
temperature, a lack of ventilation, high elevation, etc., the refrigerant circuit 
pressure on the high pressure side will rise. As a result, the compressor will 
overload, affecting product performance and life, so be sure to check the value of 
the refrigerant circuit pressure on the high pressure side. 
If the refrigerant circuit high pressure exceeds the values in the table below, please 
review the installation environment or change the fan motor output upper limit 
value to a higher value to reduce the pressure.(※) 
※  Fan motor output upper limit can not be changed for HRS300-A. 
 
Table 7.2-1  Refrigerant circuit high pressure target value 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
[One point] 
Refer to "5.5 Check monitor menu" for how to check refrigerant circuit high pressure. 
Refer to "5.20 Fan motor output high limit setting" for fan motor output high limit setting.