FOR; HC-XXACI, HC-XXSACI &  HC-XXPACI  AIR COOLED CHILLERS / With YIKE XMTD-6000 Temperature Controller

( For New Chillers with Digital Controllers, see MANUAL )

Before attempting to repair a fault, check to be sure the power supply is stable and
there are no loose electrical connections. If fault still occurs, disconnect the chiller from the power supply and follow the fault solutions below.

A – Power supply phases are in reverse order

B – Faulty phase protector relay

A – Randomly switch any 2 phases other than ground

B – Replace phase protector relay

A – Over current

B – Faulty pump contactor or overload relay

C – Faulty water pump

A – Reset overload relay and adjust Amps if necessary

B – Replace faulty part

C – Replace water pump

A – Over current

B – Faulty compressor contactor or overload relay

C – Faulty compressor

D – Dirty condenser

E – Chiller size too small for the application

A – Reset overload relay and adjust Amps if necessary

B – Replace faulty part

C – Replace compressor

D – Clean condenser coils

Turn off the power & restart chiller, watch the high pressure gauge

“IF” freon high pressure gauge exceeds 2.5 Mpa. check the following;

A – Dirty condenser

B – Faulty condenser fan

C – Working environment temperature too high

D – Faulty temperature controller

E – Temperature setting too low

F – Chiller load capacity exceeded

“IF” freon pressure does not reach 2.5 Mpa & high pressure alarm error

G – Low voltage supply. below 195 VAC or 460 VAC

H – Loose electrical connection

I – Faulty high pressure switch

J – Electrical relay KA2, bad contact

A – Clean condenser coils

B – Replace fan

C – Relocate chiller to a larger working area. Chiller needs 3 feet clearance around

D – Check for temperature controller Accuracy

E – Temperature setting over 6 C (42 F)

F – Decrease load or use a bigger chiller

G – Minimum 195V for 3Ph 220V chillers Minimum 460V for 3Ph 480V

H – Check for loose or broken electric wires

I – Replace faulty part

J – Replace relay

A – Low refrigerant

B – Low water flow

C – Faulty low pressure switch or low pressure relay KA1

A – Find and repair refrigerant leak and refill refrigerant (refer to table below for refrigerant requirements)

B – Check water lines, Clear water line blockage, check water pump

C – Replace faulty part