My Dolphin instrument panel temp gage has no numerical information on it just index marks. Chassis date of manufacture of mine was 08/02.
National coach date of manufacture was 10/02. Yours may be on an earlier chassis with different instrumentation.
My temp gage does not move any noticable amount with vary driving conditions. However real time temperature sensor does show a range of temperatures between 190 and 210F that corresponds to driving situations.
Had trouble with ac performance when new also. Was related to the water valve and supposedly the expansion valve. Took two water valve replacements to get mine to work better. Still takes way too long to respond when adjusting output temperature.
2003 34' Dolphin 5342, W22, UP, UPGBrake, F and R Track Bars, Rear IPD sway bar, Koni FSDs, Safe-T-Plus, Scan Gauge II.. 2004 Jeep Liberty, Blue-Ox Adventa..