Haier MRV5-H - Outdoor PCB Dip Switch Setting

53
6.3 Outdoor PCB Dip Switch Setting
LED light denition:
• LED1: power supply lamp
Power on light
• LED3: electronic expansion valve LEVa1, LEVa2, fault lamp
No fault, not light
• LED4: electronic expansion valve LEVb, LEVc, fault lamp
No fault, not light
• LED5: communication lamp between outdoors
Communication is normal, ashing
• LED6: communication lamp between indoor and outdoor
Communication is normal, ashing
• LED7: communication lamp between PCB and power module
Communication is normal, ashing
Outdoor dip switch conguration:
Identication:
• Master Unit: Master unit is identied by setting dip switch BM1-7, 8 to zero.
• Function master unit: the outdoor unit, whose priority is set as 0, operates with the highest priority.
• Physical slave unit: by setting dip switch, the unit number is not 0.
• Functional slave unit: the outdoor without the highest priority of running, the priority clas is 1~3.
• Group class setting: physical master unit setting is valid, which can be used for all the units. For example,
silence, snow-proof, piping length etc setting. Set all kinds of state on the physical master unit as a representative.
• Single clas setting: only be used for the single unit, instead of the whole group. For example, sensor backup
running, inverter board selection etc.
• In the following table, 1 is ON, 0 is OFF.
Dip switch introduction:
• BM1 is usually set by the engineer on site; BM2, BM3, BM4 are pre-set in the factory.
• BM1_1: Master outdoor unit searches the total outdoor units after power on at rst time. The quantity of total
outdoor units is oating from right to left on digital tube SMG1 and SMG2. "1=0" is one outdoor unit, "2=01" is
two outdoor units, "3=012" is three outdoor units, "4=0123" is four outdoor units.
• BM1_2: Master outdoor unit searches the total indoor units after locked the quantity of the outdoor units. The
quantity of total indoor units is oating from right to left on digital tube SMG1 and SMG2. "-04-" is 4 indoor units,
"-06-" is 6 indoor units, "-15-" is 15 indoor units.
• BM1_3: The setting is OFF or ON. Default is ON. Once power o󰀨, unit software shall reset to "OFF"
automatically ignoring BM1_3 setting.