One pole of untied double-pole circuit breaker breaks
I recently purchased a new dryer (220 v appliance) to replace an older model. The old dryer was connected to the panel via a double-pole breaker except that there was no clip or tie between the poles. I changed the location of the outlet when installing the new dryer, replacing the cable with the correctly rated cable for a 220 circuit.
Now one of the breakers trips every time we try to run the full cycle of the dryer (usually about 2/3 of the way through). This cuts the heat but the electronic controls and the drum motor still have power. There is no perceptible heat build-up in the cable or at the panel when this happens (and I have checked immediately after it trips). Resetting the breaker works and the cycle then finishes normally.
I have purchased the proper replacement breaker (a true double-pole) but I am not sure that this is the right course of action. Could you please provide advice?
Kurt Hall