How can i solve the warning about water-to-water heat pump

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   ** Warning ** GetDensityGlycol: Temperature is out of range (too low) for fluid [WATER] density **
   **   ~~~   ** ..Called From:CalcWatertoWaterHPHeating,Temperature=[-10.99], supplied data range=[0.00,100.00]
   **   ~~~   **  Environment=SHANGHAI ANN HTG 99.6% CONDNS DB, at Simulation time=01/21 00:00 - 00:15
   ** Warning ** GetSpecificHeatGlycol: Temperature is out of range (too low) for fluid [WATER] specific heat supplied values **
   **   ~~~   ** ..Called From:CalcWatertoWaterHPHeating,Temperature=[-10.99], supplied data range=[0.00,125.00]
   **   ~~~   **  Environment=SHANGHAI ANN HTG 99.6% CONDNS DB, at Simulation time=01/21 00:00 - 00:15
   ** Warning ** SolveAirLoopControllers: Maximum iterations (50) exceeded for DOAS SYSTEM-Y, at RUNPERIOD1, 07/11 20:30 - 20:35