What was found
AFTER ENGINES STARTED ON PUSH BACK WE GOT A CONT CAB ZONE TEMP ANNUNCIATOR ON RECALL, BUT EXTINGUISHED WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED B737-800 FIM 21-62 TASK 801 PTC BITE. RIGHT PTC FAULT LIGHT ILLUMINATED FOR FLT DECK TRIM VALVE IN BIT AND PREV FLT. LIGHT EXTINGUISHED ON VERIFY. FIM 21-62 TASK 832 STEP E(1)(A) STATES NO FURTHER ACTION NECESSARY. PERFORMED CABIN TEMP CONTROL AND INDICATION OPERATIONAL TEST, REF B737-800 AMM 21-61-00-700-807-002. OP CHECKS GOOD, FAULT LIGHT DID NOT RETURN AFTER INITIAL PTC RESET.