Vivax ACP-24COFM70GEI, Service Manual

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A. Examine whether the compressor wiring is firmed or not;
B. Check whether the compressor has malfunction or not, refer to the prior testing method of module protection;
C. Replace a new drive board, if it normally starts up, that is the power module electric circuit malfuntion.
Communication malfunction of outdoor unit main board and power module
Malfunction phenomenon: outdoor unit main board D104 indicator blinks 4 times or power module malfunction indicator
(Green) ever light on.
Processing method:
A. Check whether is there any problem between outdoor main board and 5-core wire of power module;
B. Replace one new power module and outdoor mainboard communication, malfunction resumes that
is the power module problem; Otherwise it is the outdoor mainboard problem, replace error controller.
DC current power short circuit
Malfunction phenomenon: Outdoor unit main board malfunction indicator D101 blinks 15 times.
Malfunction reason: PFC module (IPM module) short circuit in PN or the PFC electric inductance short circuit cause
the unsuccessful of capacity charge when starting.
Processing method: Check whether the ciruit is normal or not on the outdoor unit mainboard, (mostly the concrete
resistance and main relay), examine the PFC module, IPM module or the short circuit caused by PFC electric inductance,
(pls refer to the checking method of prior module protection and PFC protection), replace the corresponding controller or
PFC electric inductance.