i have yaep chiller york but made in china the chiller fault: SYS 1 CURRENT/MP/HPX and sys 2 timer then sys2 failed after about 3-4 second of contacts
i think the chiller must have sun shield kit because the manual said :Sun Shield Kit
Sun shield kit to provide shade / air gap around the
power and control panels to prevent overheating due to
solar gain on applications above 38°C ambient.
and our chiller not fault when ambient less than 38
im test the contactors of compressors and i also find acarbon and attach apic
notice the chiller not operate more than 600 hour (its new)