White powder around Refer coils

wingfoot

Well-known member
I discovered a chalky off gray substance on the left side of the rear (around black tubing) on my Dometic refrigerator. At first I thought a dirt dabber had visited me. The amount of the substance was substantial. It has no smell, I suspected a leak in the system (ammonia smell) . I cleaned the best I could and nothing has reappeared. The refrigerator is working fine for several months now.
Anyone got any ideas?
 
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