M thermal Mono
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2 Outdoor Unit PCBs
2.1 Types
M thermal Mono outdoor units have two main PCBs – one for the hydronic system and one for the refrigerant system. The
hydronic system main PCB is the same on all M thermal Mono models.
The locations of each PCB in the outdoor unit electric control boxes are shown in Figures 4-1.1 to 4-1.4 in Part 4, 1
“Outdoor Unit Electric Control Box Layout”.
2.2 Main PCB for Hydronic System
Figure 4-2.1: Outdoor unit main PCB for hydronic system
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